Annor, J, F Adzitey, T Ansah, and O.M. Ampadu. “Effect of Rumen Content to Water Ratio in Biogas Production”. Journal of Applied Sciences and Environmental Management 22, no. 8 (September 12, 2018): 1257–1262. Accessed September 16, 2026. https://www.ajol.info/index.php/jasem/article/view/177428.