Ulfa, S. N. S., & Samik, S. (2023). REVIEW ARTICLE: UTILIZATION OF ACTIVATED NATURAL ZEOLITE CATALYST IN BIODIESEL SYNTHESIS WITH ESTERIFICATION AND TRANSESTERIFICATION METHOD. Unesa Journal of Chemistry, 11(3), 165–181. https://doi.org/10.26740/ujc.v11n3.p165-181