Todorov, G. N., O. M. Barbakov, N. I. Nikitina, and V. Y. Chernova. “Specifics in Modeling of Energy Efficient Production in Agribusiness”. International Journal of Energy Economics and Policy, vol. 8, no. 3, May 2018, pp. 51-57, https://www.econjournals.com/index.php/ijeep/article/view/6332.