Who am I talking with? A face memory for social robots. - Marc Hanheide; Sebastian Wrede 001; Christian Lang 002; Gerhard Sagerer (ICRA, 2008)

Automatic Initialization for Facial Analysis in Interactive Robotics. - Ahmad Rabie; Christian Lang 002; Marc Hanheide; Modesto Castrillón Santana; Gerhard Sagerer (ICVS, 2008)

Feedback interpretation based on facial expressions in human-robot interaction. - Christian Lang 002; Marc Hanheide; Manja Lohse; Heiko Wersing; Gerhard Sagerer (RO-MAN, 2009)

Facial expressions as feedback cue in human-robot interaction - a comparison between human and automatic recognition performances. - Christian Lang 002; Sven Wachsmuth; Heiko Wersing; Marc Hanheide (CVPR Workshops, 2010)

Facial Communicative Signals - Valence Recognition in Task-Oriented Human-Robot Interaction. - Christian Lang 002; Sven Wachsmuth; Marc Hanheide; Heiko Wersing (Int. J. Soc. Robotics, 2012)

Facial Communicative Signals: valence recognition in task-oriented human-robot Interaction. - Christian Lang 002 (2012)

Facial communicative signal interpretation in human-robot interaction by discriminative video subsequence selection. - Christian Lang 002; Sven Wachsmuth; Marc Hanheide; Heiko Wersing (ICRA, 2013)