A. Amin, S. Townsend, J. Ossenbruggen, и L. Hardman. Proceedings of the 12th IFIP TC 13 International Conference on Human-Computer Interaction: Part I, стр. 736--749. Berlin, Heidelberg, Springer-Verlag, (2009)
J. Li, S. Huffman, и A. Tokuda. Proceedings of the 32nd international ACM SIGIR conference on Research and development in information retrieval, стр. 43--50. New York, NY, USA, ACM, (2009)
K. Church, A. Cousin, и N. Oliver. Proceedings of the 14th international conference on Human-computer interaction with mobile devices and services, стр. 393--402. New York, NY, USA, ACM, (2012)
T. Mandl. Proceedings of the 17th ACM Conference on Hypertext and Hypermedia (HT '06) Odense, Denmark, August 22nd-25th., стр. 73-84. ACM Press, (2006)