Tasmaganbetov, Aslan B., Zhumabay Ataniyazov, Zhangul Basshieva, Abu U. Muhammedov, and Anar Yessengeldina. “World Practice of Using Biogas As Alternative Energy”. International Journal of Energy Economics and Policy 10, no. 5 (August 10, 2020): 348–352. Accessed November 21, 2024. https://econjournals.com./index.php/ijeep/article/view/9805.