Thanarak, Prapita, and Kezang Lhazom. “Economic Feasibility Analysis of Off-Grid PV Systems for Remote Settlements in Bhutan”. International Journal of Energy Economics and Policy 11, no. 3 (April 10, 2021): 206–214. Accessed April 19, 2024. https://www.econjournals.com/index.php/ijeep/article/view/10665.