L. Nelson, C. Held, P. Pirolli, L. Hong, D. Schiano, und E. Chi. CHI '09: Proceedings of the 27th international conference on Human factors in computing systems, Seite 1795--1798. New York, NY, USA, ACM, (2009)
L. Nelson, C. Held, P. Pirolli, L. Hong, D. Schiano, und E. Chi. Proceedings of the 27th international conference on Human factors in computing systems, Seite 1795--1798. New York, NY, USA, ACM, (2009)