Facial and vocal emotion expression of a personal computer assistant to engage, educate and motivate children. - Judith M. Kessens; Mark A. Neerincx; Rosemarijn Looije; M. Kroes; Gerrit Bloothooft (ACII, 2009)

Perception of synthetic emotion expressions in speech: Categorical and dimensional annotations. - Judith M. Kessens; Mark A. Neerincx; Rosemarijn Looije; M. Kroes; Gerrit Bloothooft (ACII, 2009)