Carlos Hitoshi Morimoto, Howell O. Istance, Stephen N. Spencer, Jeffrey B. Mulligan, Pernilla Qvarfordt: Proceedings of the 2012 Symposium on Eye-Tracking Research and Applications, ETRA 2012, Santa Barbara, CA, USA, March 28-30, 2012. ACM 2012, ISBN 978-1-4503-1221-9