Hà, Trần Ngọc, and Nguyễn Thanh Thủy. “Counter - Propagation Network for Character Recognition”. <i>Journal of Computer Science and Cybernetics</i> 14, no. 2 (March 15, 2016): 13–18. Accessed November 4, 2025. https://jcc.vast.vn/jcc/article/view/7894.