N. Haryani, Taslim, Irvan, R. . Manurung, and R. Tambun, “SYNTHESIS, CHARACTERIZATION, AND APPLICATION OF ZnO/ZSM-5 AS CATALYST IN THE CRACKING PROCESS OF PALM METHYL ESTERS”, JAES, vol. 20, no. 1, pp. 63–70, Oct. 2021, doi: 10.5937/jaes0-31312.