G. Duggan, и S. Payne. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, стр. 39--48. New York, NY, USA, ACM, (2008)
S. Dumais, и W. Jones. CHI '85: Proceedings of the SIGCHI conference on Human factors in computing systems, стр. 127--130. New York, NY, USA, ACM, (1985)
B. Evans, и S. Card. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, стр. 989--998. New York, NY, USA, ACM, (2008)