Youzhou, J., Pengfei, L., Gang, L., Quanguo, Z., Pan, D., Shaopeng, W., … Chao, H. (2016). Design and preliminary experimental research on a new biogas fermentation system by solar heat pipe heating. International Journal of Agricultural and Biological Engineering, 9(2), 153–162. https://doi.org/10.25165/ijabe.v9i2.1935