Yousuf, A., Iqbal, S.A., Sarker, N.C., Hasan, M.N. and Sarker, M.S.H. 2014. Optimization and fabrication of a portable biogas reactor. Journal of Chemical Engineering. 27, 2 (Jan. 2014), 36–40. DOI:https://doi.org/10.3329/jce.v27i2.17799.