D. Cunningham, M. Breidt, M. Kleiner, C. Wallraven, and H. Bülthoff (2003). The inaccuracy and insincerity of real faces. In Visualization, Imaging, and Image Processing 2003, 7–12.
Douglas W. Cunningham and Manfred Nusseck and Christian Wallraven and Heinrich H. Bülthoff (2004). The role of image size in the recognition of conversational facial expressions. Computer Animation & Virtual Worlds. 15 (3-4), 305-310.
C. Wallraven, D. Cunningham, M. Breidt, and H. Bülthoff (2004). View dependence of complex versus simple facial motions. In Proceedings of the First Symposium on Applied Perception in Graphics and Visualization (APGV 04), 181.
Mario Kleiner, Christian Wallraven, and Heinrich H. Bülthoff (2004): The MPI VideoLab: A system for high quality synchronous recording of video and audio from multiple viewpoints, 123, Max Planck Institute for Biological Cybernetics, Tübingen, Germany.
Douglas W. Cunningham, Mario Kleiner, Christian Wallraven, Heinrich H. Bülthoff (2005) Manipulating Video Sequences to Determine the Components of Conversational Facial Expressions. TAP 2(3): 251-269.
Christian Wallraven and Jan Fischer and Douglas W. Cunningham and Dirk Bartz and Heinrich H. Bülthoff (2007). The Evaluation of Real-World and Computer-Generated Stylized Facial Expressions. ACM Transactions on Applied Perception. 4 (3), 1-24.
Manfred Nusseck and Douglas W. Cunningham and Christian Wallraven and Heinrich H. Bülthoff (2008). The contribution of different facial regions to the recognition of conversational expressions. Journal of Vision. 8 (8), 1-23.
Douglas W. Cunningham and Christian Wallraven (2009). Dynamic information for the recognition of conversational expressions. Journal of Vision. 9 (13), 1 - 17
Kathrin Kaulard, Douglas W. Cunningham, Heinrich H. Bülthoff and Christian Wallraven (2012). The MPI facial expression database — A validated database of emotional and conversational facial expressions. PLoS ONE. 7 (3): e32321. doi:10.1371/journal.pone.0032321
TAP 2(3): 251-269.