Y. Kammerer, E. Wollny, P. Gerjets, и K. Scheiter. Proceedings of the 31st Annual Conference of the Cognitive Science Society, Cognitive Science Society, Austin/TX, (2009)
P. Pirolli, E. Wollny, и B. Suh. CHI '09: Proceedings of the 27th international conference on Human factors in computing systems, ACM, New York, NY, USA, (2009)