E. Subroto, R. Indiarto, A.D. Pangawikan, E. Lembong, R. Hadiyanti "Types and Concentrations of Catalysts in Chemical Glycerolysis for the Production of Monoacylglycerols and Diacylglycerols", Advances in Science, Technology and Engineering Systems Journal, vol. 6, no. 1, pp. 612-618 (2021).