O. U. Dairo, T. M. Olayanju, and O. Amusan, “PRODUCTION OF BIO-DIESEL FROM JATROPHA CURCAS SEED USING IN-SITU TECHNIQUE: EFFECT OF CATALYST AMOUNT AND ALCOHOL-SEED RATIO”, laujet, vol. 7, no. 1, pp. 37–43, Aug. 2011.