A. Muralidharan, Z. Gyongyi, und E. Chi. Proceedings of the 2012 ACM annual conference on Human Factors in Computing Systems, Seite 1085--1094. New York, NY, USA, ACM, (2012)
S. Dumais, G. Buscher, und E. Cutrell. Proceeding of the third symposium on Information interaction in context, Seite 185--194. New York, NY, USA, ACM, (2010)