N. Chen, F. Guimbretiere, M. Dixon, C. Lewis, и M. Agrawala. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, стр. 1779--1788. New York, NY, USA, ACM, (2008)
M. Youssef, и A. Agrawala. MobiSys '05: Proceedings of the 3rd international conference on Mobile systems, applications, and services, стр. 205--218. New York, NY, USA, ACM Press, (2005)
S. Drucker, G. Petschnigg, и M. Agrawala. Proceedings of the 19th Annual ACM Symposium on User Interface Software and Technology, стр. 47-56. Montreux, Switzerland, (октября 2006)