M. Burch, R. Woods, R. Netzel, and D. Weiskopf. Proceedings of the 11th Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, (2016)
T. Dingler, A. Bexheti, E. Niforatos, and F. Alt. Proceedings of the 17th International Conference on Human-Computer Interaction with Mobile Devices and Services Adjunct, (2015)