ARTICLE Cerekovic_IEEETAFFC_2016/IDIAP Rapport with Virtual Agents: What do Human Social Cues and Personality Explain? Cerekovic, Aleksandra Aran, Oya Gatica-Perez, Daniel IEEE Transactions on Affective Computing 8 3 382-395 2017 10.1109/TAFFC.2016.2545650 doi