Towards retro-projected robot faces: An alternative to mechatronic and android faces. - Frédéric Delaunay; Joachim de Greeff; Tony Belpaeme (RO-MAN, 2009)

A study of a retro-projected robotic face and its effectiveness for gaze reading by humans. - Frédéric Delaunay; Joachim de Greeff; Tony Belpaeme (HRI, 2010)

Lighthead robotic face. - Frédéric Delaunay; Joachim de Greeff; Tony Belpaeme (HRI, 2011)

Refined human-robot interaction through retro-projected robotic heads. - Frédéric Delaunay; Tony Belpaeme (ARSO, 2012)

Active robot learning with human tutelage. - Joachim de Greeff; Frédéric Delaunay; Tony Belpaeme (ICDL-EPIROB, 2012)