by Fountana, Maria, Kalaitzis, Dimitris, Valeontis, Eftychios, Delis, Vasilis
Published in New Horizons in Web-Based Learning - ICWL 2010 Workshops (2011)

by GRATSIAS, Kostas, FRENTZOS, Elias, DELIS, Vasilis, THEODORIDIS, Yannis
Published in Lecture notes in computer science (2005)

by Delis, Vasilis, Papaioannou, Ioannis, Valeontis, Eftychios, Kalaitzis, Dimitrios, Giannakopoulos, Charalampos, Voukelatos, Michael
Published in European Conference on e-Government (01.06.2012)

by Gratsias, Kostas, Frentzos, Elias, Delis, Vasilis, Theodoridis, Yannis
Published in Web and Wireless Geographical Information Systems (2005)