Nguyen Quang Hoan, Vu Thi Them, and Bui Dinh Quan. “PATTERN RECOGNITION ABILITIES OF RECURRENT NEURAL NETWORKS ”. UTEHY Journal of Applied Science and Technology, Vol. 13, Apr. 2017, pp. 44-49, http://jst.utehy.edu.vn/index.php/jst/article/view/212.