Kulyk, Volodymir, and Sviatoslav Vyshnevskiy. 2015. “OPTIMAL CONTROL OF POWER FLOWS IN NON-UNIFORM ELECTRIC NETWORK WITH LONG-DISTANCE POWER TRANSMISSIONS”. Scientific Works of Vinnytsia National Technical University, no. 2 (November). https://works.vntu.edu.ua/index.php/works/article/view/377.