Limbrecht-Ecklundt, K., Rukavina, S., Walter, S., Scheck, A., Hrabal, D., Tan, J.-W., et al. (2013). The Importance of Subtle Facial Expressions for Emotion Classification in Human-Computer Interaction. In A. Freitas-Magalhes (Ed.), Emotional Expression The Brain and the Face (Vol. 5). Porto UFT Press. - References - Scientific Research Publishing