Yuguang, Zhou, Zhang Zongxi, Zhang Yixiang, Zhou Jie, Chen Li, Yin Xuefeng, and Dong Renjie. “Inventory Analysis of Carbon Footprint on Greenhouse Gas Emission of Large-Scale Biogas Plants”. International Journal of Agricultural and Biological Engineering 9, no. 4 (July 31, 2016): 99–105. Accessed January 27, 2026. https://ijabe.org/index.php/ijabe/article/view/2076.