[1]
S. . Ardan, A. Putra, L. DJ, R. Sundari, S. B. . Etika, and U. K. Nizar, “THE STUDY OF REUSED SILICA-TITANIA CATALYST ON BIODIESEL PRODUCTION IN VARIOUS REACTION TIMES”, IJASRE, vol. 5, no. 8, pp. 133–141, Aug. 2019.