H. Müller, J. Gove, and J. Webb. Proceedings of the 14th international conference on Human-computer interaction with mobile devices and services, page 1--10. New York, NY, USA, ACM, (2012)
K. Church, A. Cousin, and N. Oliver. Proceedings of the 14th international conference on Human-computer interaction with mobile devices and services, page 393--402. New York, NY, USA, ACM, (2012)
P. Kelley, M. Benisch, L. Cranor, and N. Sadeh. Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, page 2449--2452. New York, NY, USA, ACM, (2011)
A. Amin, S. Townsend, J. Ossenbruggen, and L. Hardman. Proceedings of the 12th IFIP TC 13 International Conference on Human-Computer Interaction: Part I, page 736--749. Berlin, Heidelberg, Springer-Verlag, (2009)