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Lecture Notes in Computer Science > Human-Computer Interaction – INTERACT 2009 > Novel User Interfaces and Interaction Techniques 4 > 332-335
Computers & Education > 2014 > 70 > Complete > 203-211
International Journal of Computer-Supported Collaborative Learning > 2011 > 6 > 4 > 561-575
Computers & Education > 2009 > 53 > 2 > 393-401
IEEE Computer Graphics and Applications > 2006 > 26 > 5 > 65 - 73