Agustian E, Praptijanto A, Sebayang D, Rus AZM, Hasan S. BIODIESEL PRODUCTION FROM WASTE COOKING OIL BY USING ULTRASONIC TUBULAR REACTOR. Int. J. Innov. Mech. Eng. Adv. Mater [Internet]. 2016 Aug. 10 [cited 2026 Jun. 3];2(1):31-8. Available from: https://publikasi.mercubuana.ac.id/index.php/ijimeam/article/view/18955