Matwani, Joseph, and Raphael Iddphonce. “A Review of the Impact of Co-Digestion Substrates on the Methane Yield”. iRASD Journal of Energy & Environment 6, no. 1 (June 22, 2025): 167–187. Accessed October 14, 2025. https://internationalrasd.org/journals/index.php/jee/article/view/2898.