L. Law, und E. Hvannberg. NordiCHI '02: Proceedings of the second Nordic conference on Human-computer interaction, Seite 71--80. New York, NY, USA, ACM, (2002)
J. Nielsen, und T. Landauer. CHI '93: Proceedings of the INTERACT '93 and CHI '93 conference on Human factors in computing systems, Seite 206--213. New York, NY, USA, ACM, (1993)
M. Andreasen, H. Nielsen, S. Schrøder, und J. Stage. CHI '07: Proceedings of the SIGCHI conference on Human factors in computing systems, Seite 1405--1414. New York, NY, USA, ACM, (2007)
A. Kittur, E. Chi, und B. Suh. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, Seite 453--456. New York, NY, USA, ACM, (2008)
S. Greenberg, und B. Buxton. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, Seite 111--120. New York, NY, USA, ACM, (2008)