Artkla, S., N. Grisdanurak, S. Neramittagapong, and J. Wittayakun. “CHARACTERIZATION AND CATALYTIC PERFORMANCE ON TRANSESTERIFICATION OF PALM OLEIN OF POTAS- SIUM OXIDE SUPPORTED ON RH-MCM-41 FROM RICE HUSK SILICA”. Suranaree Journal of Science and Technology, vol. 15, no. 2, Aug. 2026, pp. 133-8, https://ph04.tci-thaijo.org/index.php/SUJST/article/view/13396.