Huynh, Loc, Hai Luu, and Vu Dinh. “MODIFIED DIRECTION FEATURE AND NEURAL NETWORK BASED TECHNIQUE FOR HANDWRITING CHARACTER RECOGNITION”. VNUHCM Journal of Science and Technology Development 14, no. 2 (June 30, 2011): 62-70. Accessed June 4, 2025. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/1910.