Myint, N. N., A. Thanapimmetha, M. Saisriyoot, N. Chiarasumran, T. R. Srinophakun, M. Gozan, and P. Srinophakun. “Process simulation and economic feasibility of biodiesel production from acid oil, a by-product of glycerol acidulation”. Agriculture and Natural Resources, vol. 57, no. 1, Feb. 2023, pp. 153–162, https://li01.tci-thaijo.org/index.php/anres/article/view/258263.