Publications

1. Youssef Raffoul, Boundedness and Periodicity of Volterra Systems of Difference Equations, Journal of Difference Equations and Applications, 1998, Vol. 4, pp. 381-393.

2. Youssef Raffoul, Periodic Solutions for Nonlinear Volterra Difference Equations with Infinite Delay, International Journal of Nonlinear Differential Equations, Volume 5, Nos. 1&2, pp. 25-33 (1999).

3. Youssef Raffoul, Periodic Solutions for Scalar and Vector Nonlinear Difference Equations, Pan-American Mathematical Journal 9 (1999), No. 1, 97 – 111.

4. Youssef Raffoul, T-Periodic Solutions and a Priori Bounds, Journal of Mathematical and Computer Modeling 32 (2000), pp. 643-652.

5. With Paul Eloe, Denise Reid, and William Yin, Positive Periodic Solutions of Nonlinear Functional Difference Equations, Computers & Mathematics with Applications, 42 (2001), pp. 639-646.

6. With Muhammad Islam, Uniform Asymptotic Stability in Linear Volterra Difference Equations, Pan-American Mathematical Journal, 11 (2001), No. 1, pp. 61-73.

7. Y. Raffoul Stability of the zero solution of Volterra systems of the second kind difference equations, Lebanese Science Journal, Vol. 2, No. 2, 2001, pp:89-100.

8. Youssef Raffoul, Positive Solutions of Three-Point Nonlinear Second Order Boundary Value Problem, Electronic Journal of Qualitative Theory of Differential Equations, No. 15, (2002), pp. 1-11

9. Youssef Raffoul, Uniform Asymptotic Stability in Linear Volterra Systems with Nonlinear Perturbation, International Journal of Differential Equations, (2002), Vol. 6. No.1, pp. 19-28.

10. With Touhid Khandaker, Stability Properties of Linear Volterra Discrete Systems with Nonlinear Perturbation, Journal of Difference Equations and Applications, (2002), Vol. 8, pp. 857-874.

11. Youssef Raffoul, Positive Periodic Solutions of Nonlinear Functional Difference Equations, Electronic Journal of Differential Equations and Applications, Vol. 2002 (2002), No. 55, pp. 1-8.

12. With Paul Eloe, and Muhammad Islam, Uniform Asymptotic Stability in Nonlinear Volterra Discrete Systems, Special Issue on Advances in Difference Equations IV, Computers and Mathematics with Applications 45 (2003), pp. 1033-1039.

13. With Muhammad Islam, Stability Properties of Linear Volterra Integro-Differential Equations with Nonlinear Perturbations, Communications in Applied Analysis, Vol. 7, No. 3 (2003), pp. 405 -416.

14. With Youssef Dib, Boundedness and Stability in Nonlinear Discrete Systems with Nonlinear Perturbation, Journal of Difference Equations and Applications, 2003, Vol. 9, No. 9, pp. 853-862.

15. With Muhammad Islam, Exponential Stability in Nonlinear Difference Equations, Journal of Difference Equations and Applications, (2003), Vol. 9, No. 9, pp. 819 -825.

16. Youssef Raffoul, Periodic Solutions in Neutral Nonlinear Differential Equations with Functional Delay, Electronic Journal of Differential Equations and Applications, Vol. 2003 (2003), No. 102, pp. 1-7.

17. Youssef Raffoul, General Theorems for Stability and Boundedness for Nonlinear Functional Discrete Systems, Journal of Mathematical Analysis and Applications, 279 (2003), pp. 639-650

18. Youssef Raffoul, Boundedness in Nonlinear Differential Equations, Nonlinear Studies, Vol. 10. No. 4, pp. 343-350, (2003).

19. With Eric Kaufmann, Eigenvalue Problems for a Three-Point Boundary Value Problem on a Time Scale, Electronic Journal of Qualitative Theory of Differential Equations, No. 2. (2004), pp. 1-10.

20. With Allan Peterson and Christopher Tisdell, Three Point Boundary Value Problems on Time Scales, Journal of Difference Equations and Applications, (2004), Vol. 10. No. 9 pp. 843-849.

21. With Wan-Tong Li, Classification and Existence of Positive Solutions of Systems of Volterra Nonlinear Difference Equations, Applied Mathematics And Computation, 155 (2004), 469-478.

22. With Ruyun Ma, Positive Solutions of Three-Point Nonlinear Discrete Second Order Boundary Value Problem, Journal of Difference Equations and Applications, (2004), Vol. 10. No. 2, pp. 129-138.

23. Youssef Raffoul, Stability in Neutral Nonlinear Differential Equations with Functional Delays Using Fixed Point Theory, Mathematical and Computer Modeling, (2004). Vol. 40, pp.691-700.

24. Youssef Raffoul, Periodicity in General Delay Nonlinear Difference Equations Using Fixed Point Theory, Journal of Difference Equations and Applications, (2004). Vol. 10, pp.1229-1242.

25. Youssef Raffoul, Boundedness in Nonlinear Functional Differential Equations with Applications to Volterra Integro-Differential Equations, Journal of Integral Equations and Applications, Vol. 16, No. 4, Winter (2004).

26. With Eric Kaufmann, Positive Solutions for a Nonlinear Functional Dynamical Equation on a Time Scale, Nonlinear Analysis, Vol 62/7(2005), pp. 1267-1276.

27. With Allen Peterson, Exponential Stability of Dynamic Equations on Time Scales, Advances in Difference Equations, Vol. 2 (2005), pp. 133-144.

28. With Christopher Tisdell and Paul Eloe, Existence, Uniqueness and Constructive Results for Delay Differential Equations, Electronic Journal of Differential Equations, Vol. 2005 (2005), No. 121, pp. 1-11.

29. With Christopher Tisdell, Positive Periodic Solutions of Functional Discrete Systems and Population Models, Advances in Difference Equations Vol.3 (2005), pp. 369-380.

30. With Mariette Maroun, Periodic Solutions in Nonlinear Neutral Difference Equations with Functional Delay, J. Korean Math. Soc. 42 (2005), No. 2, 255--268.

31. Youssef Raffoul, Positive Periodic Solutions of Systems of Functional Differential Equations, J. Korean Math. Soc. 42 (2005), No. 4, pp. 749-759.

32. Youssef Raffoul, Existence of Periodic Solutions in Neutral Nonlinear Difference Systems with Delay, Journal of Difference Equations and Applications, 2005, Vol.11, No.13, pp.1109-1118

33. With Y. Dib and M. Maroun, Periodicity and Stability in Neutral Nonlinear Differential Equations with Functional Delay, Electronic Journal of Differential Equations, Vol. 2005 (2005), No. 142, pp. 1-11.

34. With Muhammad Islam, Stability in Linear Volterra Integro-Differential Equations with Nonlinear Perturbation, Journal of Integral Equations and Applications, Vol. 17, No. 3, Fall (2005).

35. With Xin-yuan Liao, Asypmtotic Behavior of Positive Solutions of Second Order Nonlinear Difference Systems, Nonlinear Studies, 13 (1) (2006), 1-14.

36. With Wan-Tong Li, and Xin-yuan Liao, Boundedness in Nonlinear Functional Difference Equations Via Non-Negative Lyapunov Functionals with Applications to Volterra Discrete Systems, Nonlinear Studies, 13(2006), No. 1, 1-13.

37. With Eric Kaufmann, Discretization Scheme in Volterra Integro-Differential Equations that Preserves Stability and Boundedness, Journal of Difference Equations and Applications, 12 (2006), No. 7, 731-740.

38. With Elvan Akin-Bohner, Boundedness in Functional Dynamic Equations on Time Scales, Advances in Difference Equations, Volume 2006, Art. ID 79689, Pages 1-18.

39. With Eric Kaufmann, Periodic Solutions for a Neutral Nonlinear Dynamical Equation on a Time Scale, Journal of Mathematical Analysis and Applications, 319 (2206) 315-325.

40. Youssef Raffoul, Stability and Periodicity in Completely Delayed Equations, Journal of Mathematical Analysis and Applications, 324 (2006), pp. 1356-1362.

41. With Eric Kaufmann, Stability in Neutral Nonlinear Dynamic Equations with Functional Delay on a Time Scale with Functional Delay, Dynamic Systems and Applications, 16 (2007), pp. 561-570.

42. Youssef Raffoul, Boundedness and Exponential Asymptotic Stability in Dynamical Systems with Applications to Nonlinear Differential Equations with Unbounded Terms, Advances in Dynamical Systems and Applications, Volume 2, Number 1 June (2007), pp. 107-121.

43. Youssef Raffoul, Positive Periodic Solutions in Neutral Nonlinear Differential Equations, E. J. Qualitative Theory of Diff. Equ., No. 16. (2007), pp. 1-10.

44. With Xin-yuan Liao, Asymptotic behavior of Positive Solutions of Second-Order Nonlinear Difference Systems, Nonlinear Studies, Volume 14, Number 4, (2007), pp.311-318.

45. With Muhammad Islam, Periodic Solutions of Neutral Nonlinear System of Differential Equations With Functional Delay, Journal of Mathematical Analysis and Applications, 331 (2), p.1175-1186, Jul 2007

46. Youssef Raffoul, Construction of Lyapunov Functionals in Functional Differential Equations With Applications to Exponential Stability in Volterra Integro-Differential Equations, The Australian Journal of Mathematical Analysis and Applications, Volume 4 Issue 2, Article 9, pp. 1-13, 2007

47. Periodicity and Stability in Neutral Nonlinear Dynamic With Eric Kaufmann Equations with Functional Delay on a Time Scale, Electron. J. Diff. Eqns., Vol. 2007 (2007), No. 27, pp. 1-12

48. With Eric Kaufmann and Nickolai Kosmatov, Impulsive Dynamic Equations on a Time Scale, Electron. J. Diff. Eqns. (2008), No. 67, 9 pp.

49. With Eric Kaufmann and Nickolai Kosmatov, A Second Order Boundary Value Problem With Impulsive Effects on an Unbounded Domain, Nonlinear Analysis: Theory, Methods & Applications, Volume 69, Issue 9, 1 November 2008, Pages 2924-2929.

50. With Eric Kaufmann and Nickolai Kosmatov, Impulsive Dynamic Equations on a Time Scale, Electronic Journal of Differential Equations (2008), No. 67, 9 pp.

51. With Xin-yuan Liao and Shengfan Zhou, On the Discrete-time Multi-species Competition-predation System With Several Delays, Appl. Math. Lett. 21 (2008), No. 1, 15, pp.15—22.

52. With Murat Adivar, Existence Results for Periodic Solutions of Integro-Dynamic Equations on Time Scales, Annali di Mathematica Pura ed Applicata, DOI 10.1007/s10231-008-0088-Z

53. Youssef Raffoul, Periodicity in Nonlinears Systems with Infinite Delay, Advances of Dynamical Systems and Applications, Vol. 3. No. 1 (2008), pp. 185—194.

54. With Muhammad Islam, Bounded Solutions and Periodic Solutions of Almost Linear Volterra Equations, CUBO A Mathematical Journal, Vol.11, No. 3, (115-124), August 2009.

55. With Eric Kaufmann and Nickolai Kosmatov, The Connection Between Boundedness and Periodicity in Nonlinear Functional Neutral Dynamic Equations on a Time Scale, Nonlinear Dynamics and Systems Theory, 9 (1) (2009) 89-98.

56. With Murat Adivar, Stability and Periodicity in Dynamic Delay Equations, Computer and Mathematics with Applications, (2009), doi:10.1016/j.camwa.2009.03.065.

57. Youssef Raffoul, Exponential Analysis of Solutions of Functional Differential Equations with Unbounded Terms, Banach J. Math. Anal. 3 (2009), No. 2, 28-41.

58. With Murat Adivar, Existence of Periodic Solutions in Totally Nonlinear Delay Dynamic Equations, E. J. Qualitative Theory of Diff. Equ., Spec. Ed. I, 2009 No. 1., pp. 1-20.

59. With Ruihua Liu, Boundedness and Exponential Stability of Highly Nonlinear Stochastic Differential Equations, Electronic Journal of Differential Equations, Vol. 2009(2009), No. 143, pp.1-10.

60. Youssef Raffoul, Inequalities That Lead To Exponential Stability And Instability In Delay Difference Equations, Journal of Inequalities in Pure and Applied Mathematics, Vol. 10, iss.3, art, 70, 2009.

61. With Wan-Tong Li, and Xin-yuan Liao, Asymptotic Behavior of Solutions of a Class of Nonlinear Difference Systems, International Journal of Difference Equations, 5(1), (2010) 103-112.

62. With Eric Yankson, Positive Periodic Solutions in Neutral Delay Difference Equations, Advances in Dynamical Systems Applications, 5(1), (2010), 123-130.

63. With Murat Adivar, Existence of Resolvent for Volterra Integral Equations on Time Scales, Bulletin of The Austratian Mathematical Society, 82(1), (2010), 139-155.

64. With Elvan Akin Bohner and Christopher Tisdell, Exponential Stability in Fucntional Dynamic Equations on Time Scales, Communications in Mathematical Analysis, Volume 9, No. 1. Pp. 9-108 (2010).

65. With Murat Adivar, A note on [Comput. Math. Appl., 58 (2009) 264-272], Computers and Mathematics with Applications 59(10),(2010), 3351-3354.

66. With Joan Hoffacker, Functional Differential Equations on Periodic Time Scales with Application to Population Models, Functional Differential Equations, 17(1-2) (2010), 113-121

67. Youssef Raffoul Classification of Positive Solutions of Nonlinear Systems of Volterra Integral Equations, Ann. Funct. Anal. 2 (2011), no. 2, 34–41

68. With Eric Kaufmann and Nickolai Kosmatov, Positive Periodic Solutions In Neutral Dynamic Equations on a Time Scale, Nonlinear Studies, Vol. 18, No. 1(2011), pp.75-85.

69. With Murat Adivar, Inequalities And Exponential Decay In Time Varying Delay Differential Equations, Mathematical and Computer Modelling 54 (2011), pp. 794-802

70. Youssef Raffoul, Discrete Population Models With Asymptotically Constant Or Periodic Solutions, International Journal of Difference Equations, Volume 6, Number 2, pp. 143–152 (2011)

71. With Megan Cable, Exponential Stability and Instability in Multiple Delay Differential Equations, International Journal of Mathematics Sciences and Applications, Vol. 1. No. 2 (May 2011).

72. With Murat Adivar, Shift Operators and Stability In Delayed Dynamic Equations, Sem. Mat. Univ. Pol. Torino. Vol. 68, 4 (2011), 369 – 396

73. Large Contraction and Existence of Periodic Solutions in Infinite Delay Volterra Integro-differential Equations, Journal of Mathematical Sciences: Advances and Applications, Vol. 11, issue 2, October (2011), PP. 69-77.

74. Youssef Raffoul, Existence of Positive Periodic Solutions in Neutral Nonlinear Equations with Functional Delay, Rocky Mountain Journal of Mathematics, Volume 42, Number 6 (2012), 1983-1993.

75. With Murat Adivar and Muhammad Islam, Existence of Periodic Solutions in Totally Nonlinear delay Equations, Hacettepe Journal of Mathematics and Statistics, Vol. 41(1), (2012), 1-13.

76. With Murat Adivar and Muhammad Islam, Existence of Periodic Solutions in Totally Nonlinear delay Equations, Hacettepe Journal of Mathematics and Statistics, Vol. 41(1), (2012), 1-13.

77. With M. Adıvar, H. Koyuncuoğlu, Classification of positive solutions of nonlinear systems of Volterra integro-dynamic equations on time scales, Communications in Applied Analysis, 16 (2012), no 3, 359-376.

78. With Murat, Inequalities and exponential stability and instability in finite delay Volterra integro-differential equations, Rendiconti del Circolo Matematico di Palermo; online since June 2012.

79. With Zhenkun Huang, “Biperiodicity in Neutral-Type Delayed Difference Neural Networks”, Advances in Difference Equations, 2012, 2012:5 (31 January 2012)

80. With Muhammad Islam, “Bounded Solutions of Almost Linear Volterra Equations,” Advances in Dynamical Systems and Applications, Volume 7, Number 2(2012).

81. With Zhenkun Huang, “Scale-Limited Activating Sets and Multi-periodicity for Threshold-Linear Networks on Time Scales,” IEEE Transactions on Automatic Control, Issue 99, 2013

82. With Amani Sayed Classification of Positive Solutions of Nonlinear Systems of Volterra Integral Equations, International Journal of Research and Reviews in Applied Sciences, Vol. 17, Issue 3, (2013).

83. Youssef Raffoul, Exponential Stability and Instability in Finite Delay nonlinear Volterra Integro-differential Equations, Dynamics of Continuous, Discrete and Impulsive Systems Series A: Mathematical Analysis 20 (2013) 95-106.

84. With Saeed Althubiti and Ali Al Makhzoum, Periodic Solution and Stability in Nonlinear Neutral System With Infinite Delay, Applied Mathematical Sciences, Vol. 7, 2013, no. 136, 6749 – 6764

85. With Mehmet Unal, Qualitative Analysis of Solutions of Nonlinear Delay Dynamic Equation, International Journal of Differential Equations; International Journal of Differential Equations, Volume 2013 (2013), Article ID 764389, 10 pages

86. With M. Adıvar, and H. Koyuncuoğlu, Existence of periodic and nonperiodic solutions of systems of nonlinear Volterra difference equations with infinite delay, Journal of Differne Equations and Applications, Volume 19, Issue 12, December 2013, pages 1927-1939

87. With M. Adıvar, H. Koyuncuoğlu, Existence of periodic solutions in shifts $\delta_{\pm}$ for neutral nonlinear dynamic systems on time scales, Advances in Applied Mathematics, Volume 242, September 2014, Pages 328–339

88. With Ernest Yankson, Existence Of Bounded Solutions For Almost Linear Volterra Difference Equations Using Fixed Point Theory and Lyapunov Functionals Nonlinear Studies, Vol 21, No (2014) pp:663-674.

89. With Mehmet Unal, Stability In Nonlinear Delay Volterra Integro-differential Systems, J. Nonlinear Sci. Appl. 7 (2014), 422–428.

90. With Catherine Kublik, Lyapunov Functionals That Lead To Exponential Stability And Instability In Finite Delay Volterra Difference Equations, Acta Mathematica Vietnamica October 17, 2014

91. With Murat, Necessary and sufficient conditions for uniform stability of Volterra
integro-dynamic equations using new resolvent equation" Accepted In Analele Stiintifice ale Universitatii Ovidius Constanta, Seria Matematica, Vol. 21(3), 2014, 17–32.

92. With Michael Radin, Existence and Uniqueness of Asymptotically Constant Or Periodic Solutions In Delayed Population Models, Journal of Difference Equations and Applications, Volume 20, Issue 5-6, 2014, pp: 706-716.

93. Youssef Raffoul, Qualitative Analysis of Solutions of Functional Difference Equations Using Fixed Point Theory, Commun. Korean Math. Soc. 29, (2014), No. 1, pp, 195-204.

94. With Muhammad Islam, Periodic and Asymptotically Periodic Solutions in Coupled Nonlinear Systems of Volterra Integro-differential Equations, Dynamic Systems and Application, 23 (2014) 235-244.

95. With Salah Alsahafi and Abdualrazaq Sanbo, Qualitative Analysis of Solutions in Volterra Nonlinear Systems of Difference Equations, Int. Journal of Math. Analysis, Vol. 8, 2014, no. 31, 1505 – 1515.

96. With Mehmet Unal, Stability in Delay Dynamic Equations by Fixed Point Theory: Linear Case, International Journal of Mathematica and Computations, Vol.26; Issue No. 4, Year 2015.

97. With George Eid, Qualitative analysis of stochastic systems of functionals differential, Functional Differential Equations, (2015), 22(1-2), P. 25-40.

98. With Shahah Almutairi and Mashael Al Shamari, Exponential stability and instability in multiple delays difference equations, Khayyam J. Mth., Volume 1, Number 2, 2015.

99. With Faruk Kilinc and Babatunde Oni, Stability And Instability Analysis In Finite Delay Nonlinear Volterra Integro-differential Equations, International Journal of Functional Analysis, Operator Theory and Applications Volume 8, Number 1, 2016, Pages 1-14

100. With George Eid, Qualitative analysis of nonlinear stochastic systems of functionals differential equations with forcing term, to appear in Aditi International. (2015).

101. Youssef Raffoul, Periodic Solutions of Almost Linear Volterra Integro-dynamic Equation on Periodic Time Scales, On line in Canadian Mathematical Bulletin, Bull. Vol. 58 (1), 2015 pp. 174–181

102. With Mehmet Unal, Boundedness, Periodic Solutions and Stability in Neutral Functional Delay Equations With Application To Bernoulli Type Differential Equations, Communications in Applied Analysis 19 (2015), 149–162.

103. With George Eid and Bassem Ghalayani, Lyapunov functional and stability in nonlinear finite delay Volterra discrete systems, International Journal of Difference Equations, 2015, 10(1), 77-90.

104. With Murat Adivar, Qualitative Analysis of Volterra equations on Time Scales using resolvent and Lyapunov functionals Applied Mathematics and Computation, Vol. 273, 15 January 2016, pp. 258–266.

105. Youssef Raffoul, Necessary and Sufficient Conditions for Stability of Volterra Integro-dynamic Equation Systems on Time Scales, Accepted in Archivum Mathematicum (BRNO), Tomus 52, 2016, 21-33

106. Asymptotically Periodic Solutions in Coupled Nonlinear Volterra Integro-differential Equations that Model Arm Race, Submitted to Austin Mathematics

107. With M. Adıvar, H. Koyuncuoğlu, Almost automorphic solutions of delayed neutral dynamic systems on hybrid domains, Applicable Analysis and Discrete Mathematics, doi:10.2298/AADM160402006A, (10) 128–151, 201.

108. With Sanbo, Boundedness and stability results for the finite delay nonlinear Volterra discrete system, accepted in Nonlinear Studies, July 15, 2015.

109. With Sanbo, Boundedness and stability results for the finite delay nonlinear Volterra discrete system, Nonlinear Studies, 2016, Vol. 23, Issue 1, pp: 87-94.

110. With Eric Kaufmann and Haiyan Wang, Positive Periodic Solutions of Functional Dynamic Equations on a Time Scale, in progress.

111. Lyapunov Functionals and Stability in Nonlinear Finite Delay Volterra Discrete Systems, submitted to Applied and Abstract Analysis. File StabilityInNonluinearSystem.tex

112. With Dan, General theorems in boundedness of solutions of stochastic delay differential equations, Electronic Journal of Differential Equations, Vol. 2016 (2016), No. 194, pp. 1–14.

113. Y. Raffoul, Analysis of Periodic and Asymptotically Periodic Solutions in Nonlinear Coupled Volterra Integro-differential Systems, TURKISH JOURNAL OF MATHEMATICS Turk J Math, 1(2018),42, 108-120. . journals.tubitak.gov.tr/math/inpress.htm

114. Y. Raffoul, The Case For Large Contraction In Functional Difference Equations,Advances in Difference Equations and Discrete Dynamical Systems (, pp. 8). Poland: Springer Proceedings in Mathematics and Statistics (2017

115. With Habib Raii, Uniform Stability In Nonlinear Infinite Delay Volterra Integro-differential Equations Using Lyapunov Functionals, Nonautonomous, Dynamical Systems Volume 3, Issue 1 (May 2016)

116. Y. Raffoul, Stability in Dynamic Equations On Time Scales, Communications in Applied Analysis, 23, No.2, (2019), 343-358.

117. With Zhenkun Huang, Hilger-type impulsive differential inequality and its application to impulsive synchronization of delayed complex networks on time scales, submitted to IEEE on May 2, 2017.

118. With M. Imran, M. Usman, and C. Zhang, A study of bifurcation parameters in travelling wave solutions of a damped Korteweg de Vries-Kuramoto Sivashinsky type equation, DISCRETE AND CONTINUOUS doi:10.3934/dcdss.2018043 DYNAMICAL SYSTEMS SERIES S
Volume 11, Number 4, August 2018

119. With Fatimah Alahmadi, and Shuruq Alharbi, Boundedness and Stability of Solutions in Nonlinear Volterra Integro-Differential Equation, Volume 13, No.1. pp:19-31 (2018) File name: RafFatimaShuruqADSA.tex

120. Y. Raffoul, Boundedness In Infinite Delay Functional NonLinear Differential Equations With Applications To Volterra Integro-differential Equations, Submitted on Sept. 15 to Nonautonomous Dynamical Systems, Special Issue by Chief Editor Tago.

121. Y. Raffoul, Necessary and Sufficient Conditions For Uniform Boundedness In Functional Difference Equations, EPAM, Volume 2, Issue 2, 2016, Pages 171-180.

122. Y. Raffoul, Lyapunov functionals and stability in finite delays difference equations, Recent Progress in Difference Equations, Discrete Dynamical Systems and Applications, Springer (2019), Book Chapter.

123. With Zhenkun HUANG and Jinde CAO,Hilger-type impulsive differential inequality and its application to impulsive synchronization of delayed complex networks on time scales, in Science China, July 2018, Vol. 61 078201:1–078201:312

124. Youssef Raffoul, Stability In Functional Difference Equations With Applications to Infinite Delay Volterra Difference Equations, Bull. Korean Math. Soc. 2018 Vol. 55, No. 6, 1921-1930

125. Youssef Raffoul Qualitative Analysis of Volterra Summation Equations, International Journal of Difference Equations, Volume 14, Number 1, pp. 75-89, (2019).

126. Youssef Naim Raffoul, "Recent Trends in Dynamical Systems on Time Scales," Discrete Dynamics in Nature and Society, vol. 2018, Article ID 2176510, 2 pages, 2018.

127. With Youssef Dib, Najat Khmeid, Hanna Greigeand Nagy Youssef, Optimization of Cash management fluctuation through stochastic process, Journal of Mathematical Finance, 08(02):408-425. January 2018.

128. Youssef Raffoul, Qualitative Theory of Volterra Difference Equations, Springer Nature, New York, 2018. Book

129. Y. Raffoul, Stability and boundedness in nonlinear neutral difference equations using new parameters formula and fixed point theory " Cubo vol.21 no.3 Temuco dez. File: NewVariationNeutralDiscreteRaffoul

130. Y. Raffoul, Nonlinear functional delay differential equations arising from population models, Advances in Dynamical Systems and Applications, ADSA, Volume 14, Number 1, pp. 67-81 (2019).

131. Y. Raffoul, Schaefers's Theorem and the Existence of Periodic Solutions of integro-dynamic equations on time scales, Submitted to Functional Differential Equations, January 4, 2019.

132. With Eric Yankson, Positive periodic solutions of functional discrete systems with a parameter, Cubo A Mathematical Journal, vol.21, No. 01, (79-90). April 2019.

133. With Paul Eloe and Jagan Jonnalagadda, The large contraction principle and existence of periodic solutions for infinite delay Volterra difference equations, Turk J Math, (2019) 43: 1988-1999.

134. With Andres Larrain-Hubach, Boundedness Periodicity and stability in nonlinear delay differential equations, Advances in Dynamical Systems, Vol. 15, No. 1, pp.29-37 (2020)

135. With Hanan Atatalla and Ieman Algowal, Lyapunov Functionals and Stability in Nonlinear Infinite Delay Volterra Discrete Systems, Submitted to Afrika Mathematika, January 24, 2019.

136. With Adivar, Existence and boundedness results for solutions of integral dynamic equations on time scales, International Journal of Difference Equations, Vol. 15 No.2, pp. 191-208 (2020) File: Raffoul_Adivar_Paper

137. Y. N. Raffoul, Recent Results on Summations and Volterra difference equations via Lyapunov functionals, Proceeding of London conference ICDEA 2019, Progress on Difference Equations and Discrete Dynamical Systems, On line. pp 337-352; (2021). Book Chapter.

138. With Adivar, Stability of Dynamical Systems on Time Scales, International Journal of Difference Equations, Vol. 15 No.1, pp. 11-29 (2020.

139. With M. Abyrakhis, Function Approximation Using a Discrete Fractional Order Gradient Descent Law, International Journal of Difference Equations, Vol. 15 No.1, pp. 1-10(2020)

140. With Eleonora Messina and Antonia Vecchio, Analysis of Perturbed Volterra Equations on Time Scales, Mathematics 2020, 8(7), 1133

141. With Eleonora Messina and Antonia Vecchio, Qualitative analysis of dynamic equations on time scales Using Lyapunov Functions, Submitted to Differential Equations & Applications, In Honor of Paul Eloe. Accepted, 2022.

142. Youssef N. Raffoul, Weighted norms in advanced Volterra difference equations, Submitted to the Proceedings if ISDE 21 to Advances in Discrete Dynamical Systems, Difference Equations, and Applications. Submitted on January 29, 22.

143. Raffoul, Y. N., Almutairi, A., Bazighifan, O. (2021). Oscillation Results for Nonlinear Higher-Order Differential Equations with Delay Term. Symmetry, 13(3), 11. https://www.mdpi.com/2073-8994/13/3/446

144. Raffoul, Y. N., Alsharari, F., Bazighifan, O., Nofal, T. A., Khedher, K. M. (2021). Oscillatory Solutions to Neutral Delay Differential Equations. Mathematics, 9(7), 10. https://www.mdpi.com/2227-7390/9/7/714

145. Youssef N. Raffoul, Boundedness and stability in nonlinear systems of differential equations using a modified variation of parameters formula; To be submitted, CUBO on June 7, 2022.

146. With Omar Bazighifan, Ali Hasan Ali, and Fatemah Mofarreh, Extended Approach to the Asymptotic Behavior and Symmetric Solutions of Advanced Differential Equations, Symmetry 2022, 14, 686.