S. Whittaker, L. Terveen, W. Hill, и L. Cherny. CSCW '98: Proceedings of the 1998 ACM conference on Computer supported cooperative work, стр. 257--264. New York, NY, USA, ACM Press, (1998)
Q. Jones, G. Ravid, и S. Rafaeli. CHI '01: CHI '01 extended abstracts on Human factors in computing systems, стр. 177--178. New York, NY, USA, ACM Press, (2001)
A. Fiore, S. Tiernan, и M. Smith. CHI '02: Proceedings of the SIGCHI conference on Human factors in computing systems, стр. 323--330. New York, NY, USA, ACM Press, (2002)
K. Lang. Proceedings of the 12th International Conference on Machine Learning, стр. 331--339. Morgan Kaufmann publishers Inc.: San Mateo, CA, USA, (1995)