1. Usha Kulshreshtha, Daya Shankar Kulshreshtha, Bheemraj Sihag, “Maxwell-Chern-Simons- Higgs theory”, Acta Polytechnica, 62(1):85-89 (2022).
   

2. Daya Shankar Kulshreshtha, Usha Kulshreshtha, “On the Wess-Zum INO model: Asuper- symmetric field theory”, Acta Polytechnica, 62(1):80-84 (2022).
   

3. Usha Kulshreshtha, Sanjeev Kumar, Daya Shankar Kulshreshtha, Jutta Kunz, “Boson stars and QCD Boson stars”, Proceedings of Science (PoS) LC 2019 (2020) 054.
    

4. Daya Shankar Kulshreshtha, Usha Kulshreshtha, “Role of Light-Front Coordinates in String theory”, Proceedings of Science (PoS) LC 2019 (2020) 055

5. Sanjeev Kumar, Usha Kulshreshtha, Daya Shankar Kulshreshtha and    Jutta Kunz, "Phase Diagrams of Charged Compact Boson Stars",  Eur.Phys.J. C79 (2019) no.6, 496 

6. Vivek Kamal, Sanjeev Kumar, Usha Kulshreshtha, Daya Shankar Kulshreshtha, "Wormholes in a Theory of Scalar Phantom Field", Published in Few Body Syst. 59 (2018) no.4, 70 (3 Pages)

7. Usha Kulshreshtha, "Instant Form and Light-Front Quantization of Field Theories"  Published in Few Body Syst. 59 (2018) no.3, 70 (4 pages)

8.   Sanjeev Kumar, Usha Kulshreshtha and Daya Shankar Kulshreshtha, ``Boson Stars and Boson Shells",  Few Body Systems, 59 (2018) no.2, 6 (4 pages). 

9. Sanjeev Kumar, Usha Kulshreshtha, Daya Shankar Kulshreshtha, Sarah Kahlen and Jutta Kunz, "Some New Results on Charged Compact Boson Stars", Phys. Lett. B772, 615-620 (2017) (6 pages).

10. Sanjeev Kumar, Usha Kulshreshtha and Daya Shankar Kulshreshtha,``Charged compact Boson Stars and Shells in the presence of a Cosmological constant '', Phys. Rev. D94, No. 12, 125023 (2016) (19 pages).

11. Sanjeev Kumar, Usha Kulshreshtha and Daya Shankar Kulshreshtha,`` New Results on Charged Compact Boson Stars",- Physical Review D93, No.-10, 101501 (2016) . (arXiv: hep-th/1605.02925) .

12. Usha Kulshreshtha, Daya Shankar Kulshreshtha, James P. Vary , ``Light-Front Hamiltonian, Path Integral and BRST Quantization of the Vector Schwinger Model with a Photon Mass Term in Faddeevian Regularization'', International J. Theor. Phys. Vol. 55, No.-1, 338-360 (2016) (23 pages).

13. Sanjeev Kumar, Usha Kulshreshtha and Daya Shankar Kulshreshtha,``Boson Stars in a Theory of Complex Scalar Field Coupled to Gravity", General Relativity and Gravitation Vol. 47 (2015)7, 76 (2015)

14. Usha Kulshreshtha, Daya Shankar Kulshreshtha, James P. Vary , "Hamiltonian, path Integral and BRST Formulations of Large N Scalar $ QCD_{2}$ on the Light-Front and Spontaneous Symmetry Breaking", European J. Phys. C75, 4, 174 (2015).

15. Sanjeev Kumar, Usha Kulshreshtha and Daya Shankar Kulshreshtha,``Boson Stars in a Theory of Complex Scalar Field Coupled to U(1) Gauge Field and Gravity", Classical and quantumGravity Vol. 31, 167001 (9 Pages) (2014) .

16. Usha Kulshreshtha, Daya Shankar Kulshreshtha, James P. Vary and Lalit K. Sharma, `"Light-Front BRST Quantization of Vector Schwinger Model with a Photon Mass Term'', - International J. Theor. Phys. Vol. 53 , (Issue No. 12),4230-4243 (2014) .

17. Usha Kulshreshtha and Daya Shankar Kulshreshtha, ``Instant-Form and Light-Front Hamiltonian and Path Integral Formulations of the Conformally Gauge-Fixed Polyakov D1-Brane Action in thePresence of a Scalar Axion Field and an U(1) Gauge Field'', J. Mod. Phys. Special Issue on HEP, April-2013) Vol. 4, (2013) 57-69.

18. Usha Kulshreshtha, Daya Shankar Kulshreshtha and James P. Vary, "Light-Front Hamiltonian, Path Integral and BRST Formulations of the Chern-Simons-Higgs Theory in the Broken Symmetry Phase'', J. Mod. Phys. (Special Issue on HEP, April-2013) Vol. 4, (2013) 38-48.

19. Usha Kulshreshtha, ``Light-Front Hamiltonian and Path Integral Quantization of Vector Schwinger Model with a Photon Mass Term'', Mod. Phys. Letts A27, (No. 27) (2012), 1250157 (8 pages).

20. Usha Kulshreshtha, D. S. Kulshreshtha and J. P. Vary, "Light-Front Hamiltonian and Path Integral Formulations of Large N scalar $QCD_{2}$", Physics Letters B708, (No. 1), (2012) 195-198.

21. Usha Kulshreshtha and D. S. Kulshreshtha, "String Gauge Symmetries in the Conformally Gauge-Fixed Polyakov D1 Brane Action in the Presence of Background Gauge Fields", J. Mod. Physics, (2012)Vol. 3 (Nos. 1-2) (2012) 110-115. 

22. U. Kulshreshtha and D. S. Kulshreshtha. "Light-Front Hamiltonianand Path Integral Formulations of the Conformally Gauge-Fixed Polyakov D1 Brane Action in the Presence of a Scalar Dilaton Field", Journal of Modern Physics Vol. 2 (No. 8) (2011) 826-833. 

23. U. Kulshreshtha and D. S. Kulshreshtha, "Light-Front Hamiltonian and Path Integral Formulations of the Conformally Gauge-Fixed Polyakov D1 Brane Action", Journal of Modern Physics, Vol. 2, 355-400 (2011).

24. U. Kulshreshtha, D. S. Kulshreshtha and J. P. Vary, “Light-Front Hamiltonian, Path Integral and BRST Formulations of the Chern-Simons-Higgs Theory in the Broken Symmetry Phase”, Physica Scripta  82: 055101 (2010) (Sweden).

25. U. Kulshreshtha, D. S. Kulshreshtha and J. P. Vary, “Light-Front Hamiltonian, Path Integral and BRST Formulations of the Chern-Simons Theory Under Appropriate Gauge-Fixing”, Journal of Modern Phys. 1, 385-392 (2010).

26. U. Kulshreshtha, D. S. Kulshreshtha, H. J. W. Mueller-Kirsten and J. P. Vary, “Hamiltonian, Path Integral and BRST Formulations of the Chern-Simons-Higgs Theory Under Appropriate Gauge-Fixing Physica Scripta 79: 045001 (2009) (Sweden).

27. U. Kulshreshtha and D.S. Kulshreshtha, “Hamiltonian and Path Integral Quantization of the Conformally Guage-Fixed Polyakov D1 Brane Action in the Presence of a Scalar Dilaton Field”, International J. Theor. Phys. 48, 937-944 (2009) (USA).

28 U. Kulshreshtha and D.S. Kulshreshtha, “Hamiltonian, Path Integral and BRST Formulations of the Chern-Simons Theory Under Appropriate Gauge-Fixing”, Canadian J. Phys. 86, 401-407 (2008) (Canada).

29. U. Kulshreshtha and D.S. Kulshreshtha, “Gauge-Invariant Reformulation of the Vector Schwinger Model with a Photon Mass Term and its Hamiltonian, Path Integral and BRST Formulations Under Appropriate Gauge-Fixing”, International J. Mod. Phys. A22, 6183-6201 (2007) (Singapoore).

30. U. Kulshreshtha, “Vector Schwinger Model with a Photon Mass Term: Hamiltonian and Path Integral Formulations”, Modern Physics Letters A22, 2993-3001 (2007) (Singapoore).

31. U. Kulshreshtha, “Light-Front Hamiltonian, Path Integral and BRST Formulations of the Nielsen-Olesen (Bogomol nyi) Model in the Light-Cone Gauges”, International J. Theor. Phys. 46, 2516-2530 (2007) (USA). 

32. U. Kulshreshtha, “Hamiltonian, Path Integral and BRST Formulations of the Chern-Simons-Higgs Theory in the Broken Symmetry Phase”, Physica Scripta 75, 795-802 (2007) (Sweden).

33. U. Kulshreshtha and D.S. Kulshreshtha, “Hamiltonian and Path Integral Formulations of the Born-Infeld- Nambu-Goto D1 Brane Action With and Without a Dilaton Field Under Gauge-Fixing”, International J. Theor. Phys. 44, 587-603 (2005) (USA).

34. U. Kulshreshtha and D.S. Kulshreshtha, “Hamiltonian and Path Integral Formulations of the Nambu-Goto D1 Brane Action With and Without a Dilaton Field under Gauge-Fixing”, International J. Theor. Phys. 43, 2355-2369 (2004) (USA).

35. U. Kulshreshtha and D.S. Kulshreshtha, “The Instant-Form Hamiltonian and BRST Formulations of the Nielsen-Olesen Model in The Broken Symmetry Phase”, Canad. J. Phys. 82, 843-851 (2004) (Canada).

36. U. Kulshreshtha and D.S. Kulshreshtha, “The Front-Form Hamiltonian and BRST Formulations of the Nielsen-Olesen Model in The Broken Symmetry Phase”, Canad. J. Phys. 82, 569-583 (2004) (Canada).

37. U. Kulshreshtha and D.S. Kulshreshtha, “Hamiltonian and Path Integral Formulations of the Dirac- Born-Infeld-Nambu-Goto D1 Brane Action With and Without a Dilaton Field Under Gauge-Fixing”, European Phys. Jour. C29, 453-461 (2003) (Netherlands). 

38. U. Kulshreshtha and D.S. Kulshreshtha, “Conformally Gauge-Fixed Polyakov D1 Brane Action in the Presence of a 2-Form Gauge Field: The Instant-Form and Front-Form Hamiltonian and Path Integral Formulations”, Phys. Lett. B 555, (Nos. 3-4) 255-263 (2003) (USA).

39. U. Kulshreshtha, “Hamiltonian and BRST Formulations of a Gauge-Invariant Chiral Schwinger Model with the Faddeevian Regularization”, Canad. J. Phys. 80, 1645-1660 (2002) (Canada).

40. U. Kulshreshtha, “The Light-Front Hamiltonian and BRST Formulations of a Two-Dimensional Abelian Higgs Model”, Canad. J. Phys. 80, 1631-1644 (2002) (Canada).

41. U. Kulshreshtha and D.S. Kulshreshtha, “The Front-Form Hamiltonian, Path Integral and BRST Formulations of the Siegel Action”, International J. of Theor. Phys. 41, 2395-2410 (2002) (USA).

42. U. Kulshreshtha and D.S. Kulshreshtha, “The Front-Form Hamiltonian, Path Integral and BRST Formulations of the Nonlinear Sigma Model”, International J. of Theor. Phys. 41, 1941-1956 (2002) (USA).

43. U. Kulshreshtha and D.S. Kulshreshtha, “The Front Form Hamiltonian and BRST Formulations of the Jackiw-Rajaraman Chiral Schwinger Model”, Canad. J. Phys. 80, 791-802 (2002) (Canada).

44. U. Kulshreshtha, “Hamiltonian and BRST Formulations of the Nielsen-Olesen Model”, International J. Theor. Phys. 41, 273-291 (2002)(USA).

45. U. Kulshreshtha and D.S. Kulshreshtha, “The Light-Front Hamiltonian and BRST Formulations of a Two Dimensional Abelian Higgs Model in the Broken Symmetry Phase”, International J. Theor. Phys. 41, 251-272 (2002)(USA).

46. U. Kulshreshtha, “A Gauge-Invariant Chiral Schwinger Model with the Faddeevian Regularization: Stueckelberg Term, Operator Solutions, Hamiltonian and BRST Formulations”, International J.Theor. Phys. 40, 1769-1797 (2001)(USA).

47. U. Kulshreshtha, “A Gauged Non-Linear Sigma Model in the Light-Front Frame: Hamiltonian and BRST Formulations”, International J. Theor. Phys. 40, 1561-1580 (2001) (USA).

48. U. Kulshreshtha, “The Front Form Hamiltonian and BRST Formulations of the Harada 's Gauged Floreanini-Jackiw Action”, Canad. J. Phys. 79, 1085-1098 (2001) (Canada).

49. U. Kulshreshtha, “A Gauged Non-Linear Sigma Model in the Instant-Form: Hamiltonian and BRST Formulations”, International J. Theor. Phys. 40, 491-506 (2001)(USA). 

50. U. Kulshreshtha, “ Hamiltonian and BRST Formulations of the Two-Dimensional Abelian Higgs Model in the Broken Symmetry Phase”, International J. Theor. Phys. 39, 2479-2494 (2000) (USA).

51. U. Kulshreshtha, “ Hamiltonian and BRST Formulations of the Two-Dimensional Abelian Higgs Model”, Canad. J. Phys. 78, 21-31 (2000) (Canada).

52. U. Kulshreshtha, D.S. Kulshreshtha and H.J.W. Mueller-Kirsten, “BRST Quantization of the Siegel Action”, International J. Theor. Phys. 38, 1399-1406 (1999) (USA).

53. U. Kulshreshtha and D.S. Kulshreshtha, “The Front-Form Hamiltonian and BRST Formulations of the Schwinger Model”, International J. Theor. Phys. 37, 2539-2555 (1998) (USA).

54. U. Kulshreshtha, “ Chiral-Schwinger Model with the Faddeevian Regularization in the Light-Front Frame: Construction of the Gauge-Invariant Theory through the Stueckelberg Term, Hamiltonian and BRST Formulations”, Helvetica Physica Acta, 71, 353-378 (1998)(Switezerland).

55. U. Kulshreshtha,D.S. Kulshreshtha and H.J.W. Mueller-Kirsten, “BRST Formulation of the Christ-Lee Model”, Canad. J. Phys. 73, 386-392 (1995) (Canada).

56. U. Kulshreshtha,D.S. Kulshreshtha and H.J.W. Mueller-Kirsten, “Hamiltonian and BRST Formulation of a Gauge-Invariant Chiral-Schwinger Model”, Canad. J. Phys. 72, 639-646 (1994) (Canada).

58. U. Kulshreshtha,D.S. Kulshreshtha and H.J.W. Mueller-Kirsten, “The Gauge-Invariant,Gauged Floreanini-Jackiw Action: Stueckelberg Term, Hamiltonian and BRST Formulations”, Zeitschrift f. Phys. C64, 169-176 (1994) (Germany).

59. U. Kulshreshtha,D.S. Kulshreshtha and H.J.W. Mueller-Kirsten, “BRST Formulation of a Gauge- nvariant Chiral Schwinger Model”, Nuovo Cimento 107A, 569-578 (1994) (Italy).

60. U. Kulshreshtha,D.S. Kulshreshtha and H.J.W. Mueller-Kirsten, “Gauge-Invariant 0(N) Non-linear Sigma Model(s) and Gauge-Invariant Klein-Gordon Theory: Wess-Zumino Terms and Hamiltonian and BRST Formulations”, Helvetica Physica Acta 66, 752-794 (1993) (Switzerland).

61. U. Kulshreshtha, D.S. Kulshreshtha and H.J.W.Mueller-Kirsten, “Hamiltonian and BRST Formulations of the Schwinger Model”, Helvetica Physica Acta 66, 737-751 (1993) (Switezerland).

62. U. Kulshreshtha, D.S. Kulshreshtha and H.J.W. Mueller-Kirsten, “A Gauge Invariant Theory of Chiral Bosons: Wess-Zumino Term, Hamiltonian and BRST Formulations”, Zeitschrift f. Phys. C60, 427-431 (1993) (Germany).

63. U. Kulshreshtha, D.S. Kulshreshtha and H.J.W. Mueller-Kirsten, “Hamiltonian Formulation of the Siegel Action in Various Gauges”, Phys. Rev. D47, 4634-4638 (1993) (USA).

64. U. Kulshreshtha, “Hamiltonian Formulation of One-Chain and Two-Chain System”, International J. heor. Physics, 32, 237-248 (1993) (USA).

65. U. Kulshreshtha, “ Hamiltonian Formulation of a Theory with Constraints”, J. Mathematical Phys. 33, 633-688 (1992) (USA).

66. U. Kulshreshtha, “Hamiltonian and BRST Formulations of some Field Theoretical Dynamical Systems with constraints”, Dr. rer. nat. (Ph.D.) - Dissertation, Technical University of Kaiserslautern, Kaiserslautern, Germany, December 1993.