Clarkson, M. A. “Biogas Potentials of Maize Cob Co-Digested With Animal and Plant Waste under the Effect of Bentonite Catalyst”. African Journal of Environmental Sciences and Renewable Energy, vol. 12, no. 1, Oct. 2023, pp. 78-86, https://publications.afropolitanjournals.com/index.php/ajesre/article/view/614.