Akintokun, A. K., W. A. Abibu, and M. O. Oyatogun. “Microbial Dynamics and Biogas Production During Single and Co-Digestion of Cow Dung and Rice Husk”. Applied Environmental Research, vol. 39, no. 2, July 2017, pp. 67-76, doi:10.35762/AER.2017.39.2.6.