Subiakto, A. K. H., Putra, M. S. N., Septaningsih, D. A., Ningrum, H. S., Hamidah, F., Nismarawati, A. K., … Erwinda, M. A. (2026). Synthesis and Characterization of SnO and SnO₂ Catalysts for Biodiesel from Crude Palm Oil via Interesterification. Indonesian Journal of Chemical Studies, 5(1), 54–61. https://doi.org/10.55749/ijcs.v5i1.98