Nguyen, C. C., Tran, G. S., Nghiem, T. P., Burie, J.-C. and Luong, C. M. (2019) “Real-Time Smile Detection using Deep Learning”, Journal of Computer Science and Cybernetics, 35(2), p. 135–145. doi: 10.15625/1813-9663/35/2/13315.