Todorov, G. N., E. E. Volkova, A. I. Vlasov, and N. I. Nikitina. “Modeling Energy-Efficient Consumption at Industrial Enterprises”. International Journal of Energy Economics and Policy, vol. 9, no. 2, Feb. 2019, pp. 10-18, https://www.econjournals.com/index.php/ijeep/article/view/7376.