Kulyk, V. V., O. B. Burykin, and V. A. Vydmysh. “Accounting of Variable Parameters of the Electric System in the Optimal Control of Its Modes”. Visnyk of Vinnytsia Politechnical Institute, no. 4, Aug. 2014, pp. 46-52, https://visnyk.vntu.edu.ua/index.php/visnyk/article/view/908.