Anh, Nguyen Thuy, and Nguyen Le Anh. “ON THE STATE-OPTIMIZATION APPROACH TO SYSTEM PROBLEMS: CLOSED-LOOP THINKING SOLUTIONS”. Vietnam Journal of Science and Technology 49, no. 2 (August 8, 2012). Accessed April 20, 2024. https://vjs.ac.vn/index.php/jst/article/view/1840.