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. https://doi.org/10.25165/ijabe.v10i1.2469