Arita, S., Fitriyanti, R. ., Komariah, L. N., & Hadiah, F. (2026). Valorization of Palm Empty Fruit Bunch-Derived K₂CO₃ Catalyst: Structural Analysis and Application in Biodiesel Production. Science and Technology Indonesia, 11(2), 420–435. https://doi.org/10.26554/sti.2026.11.2.420-435