Xiao, Deliang, Xiyu Wang, Hong Ding, Zhou Liu, and Richen Lin. “Biomethane Production, Upgrading, and Use from a Systems Perspective”. BioResources 21, no. 3 (July 31, 2026): 9000–9018. Accessed September 13, 2026. https://ojs.bioresources.com/index.php/BRJ/article/view/25517.