Anisimova, Tatiana, and Ludmila Lukishina. “Optimization of Enterprise Production Activities Aimed at Its Energy Efficiency Increase”. Global Journal of Business, Economics and Management: Current Issues 6, no. 2 (November 4, 2016): 147–153. Accessed May 18, 2024. https://www.un-pub.eu/ojs/index.php/gjbem/article/view/1380.