AGUSTIAN, E.; PRAPTIJANTO, A.; SEBAYANG, D.; RUS, A. Z. M.; HASAN, S. BIODIESEL PRODUCTION FROM WASTE COOKING OIL BY USING ULTRASONIC TUBULAR REACTOR. International Journal of Innovation in Mechanical Engineering and Advanced Materials, Jakarta, Indonesia, v. 2, n. 1, p. 31–38, 2016. DOI: 10.22441/ijimeam.v2i1.18955. Disponível em: https://publikasi.mercubuana.ac.id/index.php/ijimeam/article/view/18955. Acesso em: 3 jun. 2026.