Publications

Scientific Journal Articles 

 

International Conference Proceeding (Full paper review)

 

c1.        “ Parallel crew scheduling in PAROS ”, P. Alefragis, C. Goumopoulos, E. Housos, P. Sanders, T. Takkula and D. Wedelin, EuroPar '98, September 1-4, 1998 Southampton, UK, LNCS 1470, p.1104-1113, ISBN 3-540-64952-2, ISSN 0302-9743, Springer-Verlag.

c2.        “ Parallel Algorithms for Airline Crew Planning on Networks of Workstations”, C. Goumopoulos, P. Alefragis, E. Housos, International Conference on Parallel Processing (ICPP-98), Aug 10-15, 1998, Minneapolis, Minnesota, IEEE CS PR08650, p70-78, ISBN 0-8186-8650-2, ISSN 0190-3918, IEEE Computer Society.

c3.        “ A generic Legality Checker and Attribute Evaluator for a Distributed Enterprise Environment ”, C. Goumopoulos, P. Alefragis, K. Thrampoulidis, E. Housos, IEEE International Symposium on Computers and Communications (ISCC '98), June 29 - July 2, 1998, Athens, Greece, IEEE CS PR08538, p286-292, ISBN 0-8186-8538-7, IEEE Computer Society.

c4.        “Public Enterprise Water Pump Scheduling System”, Ch.Gogos, P.Alefragis, E.Housos, ETFA2005, 10th IEEE International Conference on Emerging Technologies and Factory Automation, Facolta' di Ingegneria, Catania, Italy, 19-22 September 2005, L.L. Bello & T. Sauter Eds, ISBN 0-7803-9402-X, DOI: 10.1109/ETFA.2005.1612761, IEEE Press

c5.        “SchedSP-WS: adaptation of an application service platform for scheduling solutions to web services and grid standards”, G. Goulas, P. Alefragis, E. Housos, Proceedings of the 5th IEEE International Symposium on Signal Processing and Information Technology, Athens, Greece, 18 – 21 December, 2005, p94-98,ISBN 0-7803-9313-9, ISSN 2162-7843, DOI:10.1109/ISSPIT.2005.1577076, IEEE

c6.        “ERMIS: A Helicopter Taxi Company Software Support System based on GPS, GPRS and Web Services”, G. Goulas, , V. Barkayannis, S. Gianoulis, C. Gogos, P. Alefragis, P. Foundas, C. Valouxis, S. Koubias and E. Housos, 12th IEEE International Conference on Emerging Technologies and Factory Automation, 2006, ISBN 0-7803-9758-4, ISSN 1946-0740, DOI: 10.1109/ETFA.2006.355447, IEEE.

c7.        “Application of heuristics, genetic algorithms & integer programming at a public enterprise water pump scheduling system”, Ch.Gogos, P.Alefragis, E.Housos, 11th Panhellenic conference on informatics (PCI2007), volume A, pp 579-589, Patras, Greece, ISBN 978-960-89784-0-9, New Technologies Publications, 2007

c8.        “Mobile based e-Democracy: The IBB/PMA e-Voting System”, Panayiotis Alefragis, Vassilis Triantafillou and Nikolaos Voros (2007), 11th Panhellenic conference on informatics (PCI2007), volume B, pp 491-501, Patras, Greece, ISBN 978-960-89784-0-9, New Technologies Publications, 2007

c9.        “A Hidden Markov Models tool for estimating the deterioration level of a power transformer”, Sotiropoulos, F.,   Alefragis, P. &   Housos, E.  12th IEEE International Conference on Emerging Technologies and Factory Automation, Patras, Greece, pp. 784 – 787, ISBN 978-1-4244-0825-2, ISSN 1946-0759, DOI:10.1109/EFTA.2007.4416857, IEEE, 2007

c10.     “Sensor enabled rule based alarm system for the agricultural industry”, C Gogos, P Alefragis, E Housos. 12th IEEE conference on Emerging Technologies & Factory Automation, Patras, Greece, pp. 912-915, ISBN 978-1-4244-0825-2, ISSN 1946-0740, https://doi.org/10.1109/EFTA.2007.4416880, IEEE, 2007

c11. “A Multi-Staged Algorithmic Process for the Solution of the Examination Timetabling Problem”, Christos Gogos, Panayiotis Alefragis, Efthymios Housos, In: The 7th International Conference on the Practice and Theory of Automated Timetabling, August 20 -26, 2008, Montreal, Canada.

c12.      “Pursuit of Better Results for the Examination Timetabling Problem Using Grid Resources”, Gogos C., Goulas G., Alefragis P. and Housos E., 2009 IEEE Symposium on Computational Intelligence in Scheduling (CI-Sched), Nashville, Tennessee, USA, 30 Mar-2 Apr 2009, ISBN: 978-1-4244-2757-4, DOI: 10.1109/SCIS.2009.4927014, IEEE

c13.  “BAL: A language for component based distributed applications development”, Panayiotis Alefragis and Nikos Chondros, 35th EUROMICRO Conference on Software Engineering and Advanced Applications (SEAA), August 26-29, 2009, Patras, Greece, ISBN: 978-0-7695-3784-9, ISSN: 1089-6503, DOI: 10.1109/SEAA.2009.82, IEEE.

c14.      “Distributed Scatter Search for the Examination Timetabling Problem”, Christos Gogos, George Goulas, Panayiotis Alefragis, Vasilios Kolonias, Efthymios Housos,  In: 8th International Conference on the Practice and Theory of Automated Timetabling, p211-223, Belfast, UK, 2010.

c15.     “Scam and Fraud Detection in VoIP Networks: Analysis and Countermeasures using User Profiling”, Theodore Kapourniotis, Anastasios Dagiuklas, George Polyzos, and Panayiotis Alefragkis,  50th FITCE International Conference, Palermo, Italy,pp. 1-5, ISBN 978-1-4577-1208-1, DOI: 10.1109/FITCE.2011.6133427, IEEE, 2011

c16.     “A Compilation - and Simulation - Oriented Architecture Description Language for Multicore Systems”, T. Stripf, Oey, O., Bruckschloegl, T. et al, 15th IEEE International Conference on Computational Science and Engineering (CSE), p.383-390, ISBN 978-1-4673-5165-2, DOI: 10.1109/ICCSE.2012.60, IEEE Proceedings, IEEE, 2012

c17.     “From Scilab to Multicore Embedded Systems: Algorithms and Methodologies”, Goulas, G. Alefragis, P., Voros, N.S. et. al, 2012 International Conference on Embedded Computer Systems (SAMOS), pp. 268 – 275, ISBN 978-1-4673-2295-9, DOI:10.1109/SAMOS.2012.6404184, IEEE Proceedings, IEEE, 2012

c18.     “From Scilab To High Performance Embedded Multicore Systems – The ALMA Approach”, Becker, J. et al, 15th Euromicro Conference on Digital System Design (DSD), pp.114-121, ISBN 978-1-4673-2498-4, DOI: 10.1109/DSD.2012.65, IEEE Proceedings, IEEE, 2012

c19.     “Decomposing the High School Timetable Problem”, Christos Valouxis, Christos Gogos, Panayiotis Alefragis, and Efthymios Housos, In: 9th International Conference on the Practice and Theory of Automated Timetabling, pp. 209-221, Son, Norway, 2012

c20.     “DAG Scheduling using Integer Programming in heterogeneous parallel execution environments”, Ch. Valouxis, Christos, Ch. Gogos , Panayiotis Alefragis, George Goulas, Nikolaos Voros, Efthymios Housos, Proceedings of 6th Multidisciplinary International Conference on Scheduling (MISTA 2013), Ghent, Belgium, 2013

c21.     “Coarse grain parallelization using Integer Programming”, George Goulas, Christos Gogos, Christos Valouxis, Panayiotis Alefragis, Nikolaos S. Voros, 11th IEEE International Conference on Industrial Informatics, Bochum, Germany, pp 816-820, ISBN 978-1-4799-0752-6, ISSN 1935-4576, DOI: 10.1109/INDIN.2013.6889114, IEEE, 2013

c22.     “Coarse Grained Parallelism Optimization for Multicore Architectures: The ALMA Project Approach”, George Goulas, Christos Gogos, Christos Valouxis, Panayiotis Alefragis, Nikolaos S. Voros, Reconfigurable Computing: Architectures, Tools and Applications, Lecture Notes in Computer Science Volume 7806, 2013, pp 235-236,, ISBN 978-3-642-36811-0,  Springer, 2013

c23.     “Coarse-Grain Optimization and Code Generation for Embedded Multicore Systems”, George Goulas, Christos Valouxis, Panayiotis Alefragis, Nikolaos S Voros, Oliver Oey, Timo Stripf, Thomas Bruckschlögl, Jurgen Becker, Christos Gogos, Ali El Moussawi, Maxime Naullet, Tomofumi Yuki, 2013 Euromicro Conference on Digital System Design (DSD), pp. 379-386, ISBN 978-1-4799-2978-8, doi:// 10.1109/DSD.2013.48, IEEE, 2013

c24.     “Profile-Guided Compilation of Scilab Algorithms for Multiprocessor Systems”, Jürgen Becker, Thomas Bruckschloegl, Oliver Oey, Timo Stripf, George Goulas, Nick Raptis, Christos Valouxis, Panayiotis Alefragis, Nikolaos S Voros, Christos Gogos, Reconfigurable Computing: Architectures, Tools, and Applications, Proceedings of 10th International Symposium, ARC 2014, Vilamoura, Portugal, April 14-16, 2014, pp 330-336, doi:// 10.1007/978-3-319-05960-0_37, ISBN 978-3-319-05959-4, ISSN 0302-9743, Springer, 2014

c25.     “A hybrid ILP-CP model for mapping Directed Acyclic Task Graphs to multicore architectures”, Andreas Emeretlis, George Theodoridis, Panayiotis Alefragis, Nikolaos Voros, 19/5/2014, 2014 IEEE International Parallel & Distributed Processing Symposium Workshops (IPDPSW), pp. 176-182, ISBN 978-1-4799-4117-9, doi://10.1109/IPDPSW.2014.24, IEEE

c26.     “Assigning and Scheduling Hierarchical Task Graphs to Heterogeneous Resources”, Panayiotis Alefragis, Christos Gogos, Christos Valouxis, George Goulas, Nikolaos Voros and Efthymios Housos, Proceedings of the 10th International Conference of the Practice and Theory of Automated Timetabling (PATAT 2014), pp 40-52, 26-29 August 2014, York, United Kingdom, ISBN: 978-0-9929984-0-0.

c27.     “Taking Care of Elderly People with Chronic Conditions Using Ambient Assisted Living Technology: The ADVENT Perspective”, Theodor C. Panagiotakopoulos, Christos P. Antonopoulos, Panayiotis Alefragis, Achilles Kameas, Stavros A. Koubias, Distributed, Ambient, and Pervasive Interactions, v. 8530 , pp. 474-485, Lecture Notes in Computer Science, HCI (21), ISBN 978-3-319-07787-1, Springer, 2014.

c28.     “Application of a hybrid parallel Monte Carlo PDE Solver on rectangular multi-domains”, P. Alefragis, A. Spyrou and S. Likothanassis,  Proceedings of the 6th International Conference on Numerical Analysis (NumAn 2014), Chania, Greece, pp 1-6, ISBN: 978-960-8475-22-9, TUC, 2014

c29.     “Serial and Parallel Implementation of an Interface Relaxation Method”, A. Korfiati, P. Tsompanopoulou, P. Alefragis and S. Likothanassis,  Proceedings of the 6th International Conference on Numerical Analysis (NumAn 2014), Chania, Greece, pp 167-173, ISBN: 978-960-8475-22-9, TUC, 2014

c30.     "Mapping DAGs on Heterogeneous Platforms Using Logic-Based Benders Decompostion", Emeretlis, A., Theodoridis, G., Alefragis, P., Voros, N, 2015 IEEE Computer Society Annual Symposium on VLSI, pp.119-124, 8-10 July 2015, ISBN 978-1-4799-8719-1, doi: 10.1109/ISVLSI.2015.98, IEEE, 2015

c31.  “An Asynchronοus Interface Relaxation Method for Multi-domain / Multi-Physics Problems”, A. Korfiati, K. Daloukas, P. Alefragis, P. Tsompanopoulou and S. Likothanassis, International Conference on Numerical Analysis Applications and Methods (ICNAAM), Rhodes, Greece, Sept. 23-29, 2015, ISSN: 0094-243X, AIP Conference Proceedings

c32.      “A Hybrid Approach for Mapping and Scheduling on Heterogeneous Multicore Systems”, A. Emeretlis, G. Theodoridis, P. Alefragis, N. Voros, 4th Workshop on Virtual Prototyping of Parallel and Embedded Systems (ViPES 2016), July 17th, Samos Island, Greece, p360-365, ISBN: 978-150903076-7, DOI: 10.1109/SAMOS.2016.7818373, IEEE, 2016

c33.     “Dynacargo routing subsystem and its algorithms for efficient urban waste collection”, Sotiris Christodoulou, Panayiotis Alefragis, Andreas Gizas, George Asimakopoulos, Vassilios Triantafillou, Proceedings of the 11th International Conference of the Practice and Theory of Automated Timetabling, PATAT 2016, 23-26 August 2016, Udine, Italy 2016, pp. 45-61, ISBN: 978-0-9929984-1-7

c34.     “Scheduling independent tasks on heterogeneous computing systems by optimizing various objectives”, Christos Gogos, Christos Valouxis, Panayiotis Alefragis, Iordanis Xanthopoulos, and Efthymios Housos, Proceedings of the 11th International Conference of the Practice and Theory of Automated Timetabling, PATAT 2016, 23-26 August 2016, Udine, Italy 2016, pp 149-161, ISBN: 978-0-9929984-1-7 .

c35.     “Model-based Development of Enhanced Ground Proximity Warning System for Heterogeneous Multi-Core Architectures”, Durak, Umut, D. Müller, J. Becker, N. Voros, P. Alefragis, T. Stripf, P.-A. Agnel, G. Rauwerda and K. Sunesen, 23th Symposium Simulationstechnik (ASIM 2016), 7-9 Sep. 2016, Dresden, Germany.

c36.     “Highway Rest Areas simultaneous energy optimization and user satisfaction”, Iordanis Xanthopoulos, George Goulas, Christos Gogos, Panayiotis Alefragis and Efthymios Housos, 20th Panhellenic conference on informatics (PCI2016), Patras, Greece, ISBN 978-1-4503478-9-1, doi:10.1145/3003733.3003793, ACM, 2016.

c37.     “Dynacargo: The evaluation results of a Dynamic Waste Collection Management System based on Real-time and Forecasted Data”, George Asimakopoulos, Sotiris Christodoulou, Panayiotis Alefragis, Andreas Gizas and Vassilios Triantafilou, 20th Panhellenic conference on informatics (PCI2016), Patras, Greece, ISBN 978-1-4503478-9-1, doi:10.1145/3003733.3003804, ACM, 2016.

c38.      “WCET-Aware Parallelization of Model-Based Applications for Multi-Cores: the ARGO Approach”, S. Derrien, I. Puaut, P. Alefragis, M. Bednara, H. Bucher, C. David, Y. Debray, U. Durak, I. Fassi, C. Ferdinand, D. Hardy, A. Kritikakou, G. Rauwerda, S. Reder, M. Sicks, T. Stripf, K. Sunesen, T. ter Braak, N. Voros and J. Becker, accepted for publication, Proceedings of the 2017 Design, Automation & Test in Europe Conference & Exhibition (DATE), 27-31 March, 2017, Swisstech, Lausanne, Switzerland,ISBN 978-3-9815370-8-6, ISSN 1558-1101,DOI: 10.23919/DATE.2017.7927000, IEEE.

c39.      “Task graph mapping and scheduling on heterogeneous architectures under communication constraints”, Andreas Emeretlis,  Theodore Tsakoulis, George Theodoridis, Panayiotis Alefragis, and Nikolaos Voros, Proceedings of the 2017 International Conference on Embedded Computer Systems: Architectures, Modeling, and Simulation (SAMOS), September 2017, SAMOS, Greece, ISBN 978-1-5386-3437-0, DOI: 10.1109/SAMOS.2017.8344634, IEEE

c40.      “Automated parameter selection of scheduling algorithms using machine learning techniques”, Panayiotis Alefragis and Sofos Charalampos, Proceedings of the 21st Pan-Hellenic Conference on Informatics, p. 239—244, September 2017, Larisa, Greece, ISBN 978-1-4503535-5-7, doi: 10.1145/3139367.3139442, ACM.

c41.      “Exploration of Logic-Based Benders Decomposition Approach for Mapping Applications on Heterogeneous Multi-Core Platforms”, Andreas Emeretlis, George Theodoridis, Panayiotis Alefragis, and Nikolaos Voros, Proceedings of 8th Multidisciplinary International Conference on Scheduling (MISTA 2017), Kuala Lumpur, Malaysia, 2017

c42.      “Mapping and Scheduling Hard Real Time Applications on Multicore Systems - The ARGO Approach”, Panayiotis Alefragis, George Theodoridis, Merkourios Katsimpris, Christos Valouxis, Christos Gogos, George Goulas, Nikolaos Voros, Simon Reder, Koray Kasnakli, Marcus Bednara4, David Müller, Umut Durak and Juergen Becker, Applied Reconfigurable Computing: Architectures, Tools, and Applications, Proceedings of 14th International Symposium, ARC 2018, Santorini, Greece, May 2-5, 2018, pp 700-711, https://doi.org/10.1007/978-3-319-78890-6_56, ISBN 978-3-319-78890-6, Springer, 2018

c43.         “Constraint Programming Modeling for the Task Scheduling Problem with Data Storage at MPSoCs”, Christos Valouxis, Christos Gogos, Panayiotis Alefragis, George Theodoridis and Nikolaos Voros, Proceedings of the 12th International Conference of the Practice and Theory of Automated Timetabling, pp. 287-297 , ISBN: 978-0-9929984-2-4, PATAT 2018, 28-31 August 2018, Vienna, Austria

c44.         “Optimization of a Local Energy Market Operation in a Transactive Energy Environment”, Nikolaos Andriopoulos, Athanasios Bachoumis,  Panayiotis Alefragis and Alexios Birbas , 17th International Conference on the European Energy Market, Sep 2020, Stockholm, Sweden, ISBN 978-1-7281-6919-4, ISSN 2165-4093, doi: 10.1109/EEM49802.2020.9221893, IEEE.

c45.         “A multiple metaheuristic variable neighborhood search framework for the Uncapacitated Examination Timetabling Problem”, Panayiotis Alefragis,         Christos Gogos, Christos Valouxis and Efthymios Housos, 13th International Conference of the Practice and Theory of Automated Timetabling, PATAT 2021, Volume I (2020), pp.159 - 171, ISBN: 978-0-9929984-3-1.

c46.         “A proven optimal result for a benchmark dataset of the Uncapacitated Examination Timetabling Problem”, Angelos Dimitsas, Vasileios Nastos, Christos Valouxis, Panayiotis Alefragis, Christos Gogos, Proceedings of the 13th International Conference on the Practice and Theory of Automated Timetabling, PATAT 2022,Volume III (2022), pp. 30-46, ISBN: 978-0-9929984-5-5

c47.         “A Pragmatic Approach for Solving the Sports Scheduling Problem”, Angelos Dimitsas, Christos Gogos, Christos Valouxis, Alexandros Tzallas, Panayiotis Alefragis, Proceedings of the 13th International Conference on the Practice and Theory of Automated Timetabling, PATAT 2022, Volume III (2022), pp. 195-207, ISBN: 978-0-9929984-5-5

c48.         “Sustainable energy aware industrial production scheduling”, Panayiotis Alefragis, Konstantinos Plakas, Iwannis Karampinis, Christos Valouxis, Michael Birbas, Alexios Birbas and Christos Gogos, Proceedings of the 13th International Conference on the Practice and Theory of Automated Timetabling, PATAT 2022, Volume III (2022), pp. 256-264, ISBN: 978-0-9929984-5-5

c49.         “Modeling a balanced commute educational timetabling problem in the context of teaching Integer Programming”, Christos Gogos, Angelos Dimitsas, Christos Valouxis, Panayiotis Alefragis, 7th South-East Europe Design Automation, Computer Engineering, Computer Networks and Social Media Conference (SEEDA-CECNSM), 2022, pp. 1-5, ISBN 979-8-3503-9858-8, doi: 10.1109/SEEDA-CECNSM57760.2022.9932912.

c50.         “Sampling Points Selection Algorithm For Advanced Photolithography Process”, A. Magklaras, C. Gogos, P. Alefragis, C. Valouxis and A. Birbas, 7th South-East Europe Design Automation, Computer Engineering, Computer Networks and Social Media Conference (SEEDA-CECNSM), 2022, pp. 1-5, ISBN 979-8-3503-9858-8, doi: 10.1109/SEEDA-CECNSM57760.2022.9932920.

c51.         “A Multi-stage Hybrid Approach for Mapping Applications on Heterogeneous Multi-core Platforms”, A. Emeretlis, G. Theodoridis, P. Alefragis and N. Voros,  2022 IFIP/IEEE 30th International Conference on Very Large Scale Integration (VLSI-SoC), 2022, pp. 1-6, ISBN 978-1-6654-9005-4, ISSN 2324-8440, doi: 10.1109/VLSI-SoC54400.2022.9939643, IEEE.

c52.         “A Forecasting Model for Predicting Electricity Day-Ahead Market Prices for Scheduling Industrial Applications”, Konstantinos Plakas, Ioannis Karampinis, Panayiotis Alefragis, Alexios Birbas, Michael Birbas and Alex Papalexopoulos, The 13th Mediterranean Conference on Power Generation, Transmission, Distribution and Energy Conversion, 7 - 9 November 2022, Malta.

s1.            “ High Performance Airline Crew-Pairing Optimization ”, C. Goumopoulos, P. Alefragis, E. Housos, European Parallel and Distributed Systems Conference (Euro-PDS98), July 1-3, 1998 Vienna, AUSTRIA, p.237-243, ISBN 0-88986-266-4, IASTED/ACTA Press.

s2.            “ Performance Improvements of the DAYSY Legality Checking System for Real Time Rescheduling Applications ”, P. Alefragis, E. Housos, 5th International Conference of the Decision Sciences Institute (DSI-99), p.216-218, ISBN 0-9667118-1-5, 1999.

s3.            “An Electronic Voting Scheme with Physical Multiple Administrators and identical ballot boxes”, P.S. Alefragis, S.K. Lounis, V.D. Triantafillou, N.S. Voros,  Pedro T. Isaías, Nitya Karmakar, Luís Rodrigues, Patrícia Barbosa (Eds.), Proceedings of the IADIS International WWW/Internet 2004, Madrid, Oct 6-9 2004, ISBN 972-99353-0-0, IADIS.

s4.            “Specification and Design of an advanced Hot Spot Controller Based on Radius Authentication Server”, P.S. Alefragis, V.D. Triantafillou, K.E. Tsatsaronis and N.S. Voros, EUROMEDIA'2005, Toulouse, France, Apr 11-13, 2005.

s5.            “Electronic democracy in Practice: A Web based voting system relying on Identical Ballot Boxes with physical multiple administration”, P.S. Alefragis, S.K. Lounis, V.D. Triantafillou, N.S. Voros,  IADIS International e-Society 2005, Qawra, Malta, Jun 27- 30 2005.

International Conference Proceeding (Extended Abstracts)


a1.  “Παράλληλος Επιλυτής Χρονοπρογραμματισμού Ιπτάμενου Προσωπικού Αεροπορικών Εταιρειών με Χρήση Δυναμικής Δημιουργίας Ταξιδιών”, P. Alefragis, K. Papoutsis, C. Valouxis and E. Housos, 15ο Συνέδριο Εταιρείας Ελληνικής  Εταιρείας Επιχειρησιακών Ερευνών, Τρίπολη, 31 Οκτ. – 01 Νοε., 2002.

a2.  “Power Aware Security Policy Guidelines for WSN”, G Asimakopoulos, P Alefragis, E Housos, International e-Conference of Computer Science 2006: Additional Papers from ICNAAM 2006 and ICCMSE 2006, v8, pp 472-475, CRC Press, 2007

a3.  “SchedScripter: Workflows for Grid-based Human Resources Scheduling Applications”, Goulas G., Gogos C., Alefragis P. and Housos E. (2009), 4th EGEE User Forum/OGF 25 and OGF Europe's 2nd, Catania, Sicily, Italy, 2-6 March 2009

a4.  “Applying scatter search over the grid for the examination timetabling problem”, Christos Gogos, George Goulas, Panayiotis Alefragis, and Housos Efthymios. In:EUROPT2009, 7th EUROPT Workshop, Advances in Continuous Optimization, Germany,Remagen, 3-4 July 2009, 2009.

a5.  “Attacking Google’s machine reassignment problem using mathematical programming, metaheuristics and heuristics”, Christos Gogos, Panayiotis Alefragis, Christos Valouxis, and Housos Efthymios, In: EURO2012, 25th European Conference on Operational Research, Vilnius Lithuania,8-11July2012, 2012.

a6.  “Graphics Processing Unit acceleration of a memetic algorithm for the Examination Timetabling Problem”, Vasileios Kolonias, George Goulas, Panayiotis Alefragis, Christos Gogos, Efthymios Housos, Proceedings of the 10th International Conference of the Practice and Theory of Automated Timetabling (PATAT 2014), pp 495-497, 26-29 August 2014, York, United Kingdom, ISBN: 978-0-9929984-0-0.

a7.  “Improvements of a hybrid ILP-CP Benders decomposition for mapping and scheduling task DAGs on heterogeneous architectures”, Andreas Emeretlis  George Theodoridis,  Panayiotis Alefragis, Nikolaos Voros, Proceedings of the 11th International Conference of the Practice and Theory of Automated Timetabling, PATAT 2016, 23-26 August 2016, Udine, Italy 2016, pp 477-479, ISBN: 978-0-9929984-1-7