webpage http://dx.doi.org/10.1145/1240624.1240728 http://www.scopus.com/inward/record.url?eid=2-s2.0-35348869338&partnerID=MN8TOARS
published in Conference on Human Factors in Computing Systems - Proceedings Proceedings Proceedings of the SIGCHI Conference on Human Factors in Computing Systems Journal Proceedings of the SIGCHI conference on Human factors in computing systems Proceedings