Santoso, A., Ramadhan, L., Susilo, B., Sukarni, S., Wijaya, A., Sumari, S., Muntholib, M., Pramesti, I. N., & Asrori, M. R. (2024). Conversion of Waste Cooking Oil with Transesterification Process in Ultrasonicator using SrO-KF Catalyst. Orbital: The Electronic Journal of Chemistry, 16(3), 136-142. https://doi.org/10.17807/orbital.v16i3.18661