Demov, O. D., and A. Z. Voinarovskyi. “An Increase of Efficiency Control of Discrete Powers of Condensers in Electric Networks of Industrial Enterprises”. Visnyk of Vinnytsia Politechnical Institute, no. 6, Nov. 2010, pp. 166-70, https://visnyk.vntu.edu.ua/index.php/visnyk/article/view/278.