By McQuiggan Scott W.   Lester James C.   in International Journal of Learning Technology

ISSN:1477-8386|4|3-4|216-233

Inderscience Publishers‎(2009)‎

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By Lester James C.   Voerman Jennifer L.   Towns Stuart G.   Callaway Charles B.   in Applied Artificial Intelligence

ISSN:1087-6545|13|4-5|383-414

Taylor & Francis Ltd‎(1999)‎

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