Temporal Segmentation of Facial Behavior. - Fernando De la Torre; Joan Campoy; Zara Ambadar; Jeff F. Conn (ICCV, 2007)

Improved facial expression recognition via uni-hyperplane classification. - Sien W. Chew; Simon Lucey; Patrick Lucey; Sridha Sridharan; Jeff F. Conn (CVPR, 2012)