Daus, Y. V., I. V. Yudaev, M. A. Taranov, S. M. Voronin, and V. S. Gazalov. “Reducing the Costs for Consumed Electricity through the Solar Energy Utilization”. International Journal of Energy Economics and Policy, vol. 9, no. 2, Feb. 2019, pp. 19-23, https://www.econjournals.com/index.php/ijeep/article/view/7201.