By Xenos Michalis   Tsiatsos Thrasyvoulos   Vassiliadis Bill   in International Journal of Knowledge and Learning

ISSN:1741-1009|4|2-3|285-297

Inderscience Publishers‎(2008)‎

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By Bouras Christos   Igglesis Vaggelis   Kapoulas Vaggelis   Tsiatsos Thrasyvoulos   in International Journal of Web Based Communities

ISSN:1477-8394|1|2|127-139

Inderscience Publishers‎(2005)‎

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