N. Aprianti, M. Faizal, M. Said, and S. Nasir, “CATALYTIC GASIFICATION OF OIL PALM EMPTY FRUIT BUNCH BY USING INDONESIAN BENTONITE AS THE CATALYST”, JAES, vol. 19, no. 2, pp. 334–343, Jan. 2021, doi: 10.5937/jaes0-28781.