M. Obianke, A. Muhammad, L. Hassan, A. Aliero, and M. Liman, “Optimization of reaction variables <i>in situ</i> transesterification of <i>Jatropha curcas</i> seed oil for biodiesel production”, Nig J Bas App Sci, vol. 26, no. 2, pp. 102–114, Mar. 2019.