Widayat, W. ., Sumarno, R. A. ., Ananda, Y. Y. ., Sulardjaka, S. . and Philia, J. . (2025) “Catalytic conversion of palm acid oil and bulk cooking oil to biodiesel using Fe/aluminosilicate”, International Journal of Innovative Research and Scientific Studies, 8(3), pp. 12–29. doi: 10.53894/ijirss.v8i3.6425.