Fen, C., Gao, Y., Wei, L., Fenwu, L., Wuping, Z., Yushan, B., & Xiaomei, L. (2017). Maximal methane potential of different animal manures collected in northwest region of China. International Journal of Agricultural and Biological Engineering, 10(1), 202–208. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/2469