N. Weibel, A. Fouse, E. Hutchins, and J. Hollan. Proceedings of the 16th International Conference on Intelligent User Interfaces, page 257--266. New York, NY, USA, ACM, (2011)
A. Fouse, N. Weibel, E. Hutchins, and J. Hollan. CHI '11 Extended Abstracts on Human Factors in Computing Systems, page 299--304. New York, NY, USA, ACM, (2011)Demo.
B. Gunjal, and H. Shi. Proceedings of the 2008 International Conference on Information & Knowledge Engineering, IKE 2008, July 14-17, 2008 Las Vegas, Nevada, USA, page 176-182. CSREA Press, (2008)
S. Stellmach, L. Nacke, and R. Dachselt. ETRA '10: Proceedings of the 2010 Symposium on Eye-Tracking Research & Applications, page 109--112. Austin, Texas, ACM, (March 2010)