47. Connie T, Al-Shabi M, Cheah W, Goh M. Facial expression recog- nition using a hybrid CNN-SIFT aggregator. In: Phon-Amnuaisuk S, Ang S-P, Lee S-Y (eds.) Multi-disciplinary trends in artificial intelligence. Berlin, Heidelberg, Germany: Springer; 2017. p. 139–149. https://...