S. Soursos, C. A. Courcoubetis, G. C. Polyzos, "Differentiated Services in the GPRS Wireless Access Environment", Proceedings of the 2001 Tyrrhenian International Workshop on Digital Communications (IWDC 2001), Evolutionary Trends of the Internet, Taormina, Italy, September, 2001
R. Pitkänen, M. Vazirgiannis, G. C. Polyzos, "The Role of Streaming in Interactive Multimedia Documents Dissemination", Proceedings of the. IEEE International Conference on Multimedia and Expo (ICME 2001), Tokyo, Japan, August, 2001
S. Soursos, C. A. Courcoubetis, G. C. Polyzos, "Pricing Differentiated Services in the GPRS Environment", Proceedings of the 1st ACM Wireless Mobile Internet Workshop, Rome, Italy, July, 2001
P. Blair, G. C. Polyzos, "Packet Cellular System Optimizations for Non-Uniform Traffic", Proceedings of the IEEE International Conference on Communications (ICC 2001) , Helsinki, Finland, June, 2001
G. Chalkiadakis, S. Politis, C. Ververidis, G. C. Polyzos, "Mobile Multimedia Portal", Proceedings of the HP Openview University Association (HP-OVUA) Workshop, Berlin, Germany, 2001
G. C. Polyzos, C. A. Courcoubetis, "Pricing for Efficient Quality of Service Support in Wireless Packet Networks,", Proceedings of the 2nd Wireless World Research Forum Meeting, Helsinki, Finland, May, 2001
G. Xylomenos, G. C. Polyzos, "Quality of Service Issues in Multi-Service Wireless Internet Links", Proceedings of the International Workshop on QoS in Multiservice IP Networks (QoS-IP), pp. 347-365, 2001
E.T. Diamadis, G. C. Polyzos, "Learning through Collaborative Search on the Web and Sharing Annotations", Patras, Greece, September, 2002
E.T. Diamadis, G. C. Polyzos, "Working on Web-based Virtual Learning Environments: Problems and Solutions", Proceedings of the 4th International Workshop on Computer Science and Information Technologies (CSIT), Patras, Greece, September, 2002
C. Ververidis, S. Valavanis, M. Vazirgiannis, G. C. Polyzos, "An Architecture for Sharing, Discovering and Accessing Mobile Data and Services: Location and Mobility Issues", Proc. LBS Workshop, Mykonos Island, Greec, 2002
