Uthman, H. and A. Saka, A. 2013. Comparatives Study of Production Biodiesel from Soybean oil and Jatropha Curcas Seeds Oil. Distributed Generation & Alternative Energy Journal. 28, 2 (Mar. 2013), 31–42. DOI:https://doi.org/10.13052/dgaej2156-3306.2822.