S. Jekayinfa, A. Adebayo, O. Ogunkunle, S. Kareem, C. Olaleye, and J. Okoya, “DESIGN AND CONSTRUCTION OF A METALLIC BIO-DIGESTER FOR THE PRODUCTION OF BIOGAS FROM COW DUNG”, laujet, vol. 8, no. 2, pp. 182-187, Nov. 2014.