1. A.A. Salah, N. Sebe, T. Gevers, Communication and automatic interpretation of affect from facial expressions, in: Affective Computing and Interaction: Psychological, Cognitive and Neuroscientific Perspectives, 2010, pp. 157.
2. P. Viola, Rapid object detection using a boosted cascade of simple features, in: Proceedings of the 2001 IEEE Computer Society Conference on, vol. 1, 2001, pp. 511–518.
3. H. Fang, N. Costen, From rank-n to rank-1 face recognition based on motion similarity, in: Proceedings of the British Conference on Machine Vision, 2009, pp. 1–11.
4. Survey on RGB, 3D, thermal, and multimodal approaches for facial expression recognition: history, trends, and affect-related applications;Corneanu;IEEE Trans. Pattern Anal. Mach. Intell.,2016
5. C. Cornelis, et al., Vaguely quantified rough sets, in: Proceedings of the International Conference on Rough Sets, Fuzzy Sets, Data Mining and Granular Computing, vol. 4482, 2007, pp. 87–94.