By Kontogiannis T.   in International Journal of Human-Computer Studies

ISSN:1071-5819|45|1|75-104

Academic Press‎(1996)‎

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By Kontogiannis T.   Linou N.   in International Journal of Human-Computer Studies

ISSN:1071-5819|54|1|53-79

Academic Press‎(2001)‎

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