Богачкова, Л. Ю., Н. Ю. Усачева, Е. Е. Зайцева, and Ш. Г. Хуршудян. “Energy Efficiency Policy in the Volgograd Region: Progress and Priority Growth Areas”. Modern Economics: Problems and Solutions, Vol. 11, Dec. 2017, pp. 77-86, doi:10.17308/meps.2017.11/1805.