No description available of A. J. Happ...
Fullerton, S. and Happ, A. J. (1993): A User-Oriented Test of Icons in an Educational Software Product. In: Proceedings of the Fifth International Conference on Human-Computer Interaction 1993. pp. 44-49.
Douglas, S. D. and Happ, A. J. (1993): Evaluating Performance, Discomfort, and Subjective Preference between Computer Keyboard Designs. In: Proceedings of the Fifth International Conference on Human-Computer Interaction 1993. pp. 1064-1069.
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