Molchanyuk, I. V., and A. V. Plotnikov. “Necessary and Sufficient Conditions of Optimality in the Problems of Control With Fuzzy Parameters”. Ukrains’kyi Matematychnyi Zhurnal 61, no. 3 (March 25, 2009): 384–390. Accessed April 11, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/3026.