By Valente A.   Breuker J.   Brouwer B.   in International Journal of Human-Computer Studies

ISSN:1071-5819|51|6|1079-1125

Academic Press‎(1999)‎

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By Venturi V.   Otten M.   Korse V.   Brouwer B.   Leong J.   Weisbeek P.   in Gene

ISSN:0378-1119|155|1|83-88

Elsevier‎(1995)‎

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