ABDELRAHMAN, Maha A. A. et al. Esterification of High Free Fatty Acid Jatropha curcas Oil for Biodiesel Production. Gezira Journal of Engineering and Applied Sciences, [S.l.], v. 13, n. 1, p. 40-50, nov. 2020. ISSN 1858-5698. Available at: <http://journals.uofg.edu.sd/index.php/gjeas/article/view/1611>. Date accessed: 30 june 2026.