Popov, Dmitry Ivanovich, and Olga Yurievna Lazareva. “A Knowledge Testing Production Model Based on a Cognitive Map for SWI-Prolog Applications”. International Journal of Emerging Technologies in Learning (iJET) 10, no. 6 (December 16, 2015): pp. 62–65. Accessed April 28, 2024. https://online-journals.org/index.php/i-jet/article/view/4868.