@article {stamatiou2007cryptographically,
	title = {Cryptographically secured communication between tutors of the Computer Science course of the Hellenic Open University: Experiences from the introductory module {\textquoteleft}Introduction to Computer Science{\textquoteright}(in Greek)},
	journal = {HELLENIC OPEN UNIVERSITY JOURNAL OF INFORMATICS},
	volume = {1},
	number = {1},
	year = {2007},
	author = {Stamatiou, Yiannis and Christos J. Pierrakeas and Xenos, Michalis}
}
