Chrisnasari, R., 		Yonardi, A., 		Lie, H., 		Widi, R., & 		Purwanto, M.
2016 Feb 24.  Immobilization of Lipase on Surfactant-Modified Bentonite and Its Application for Biodiesel Production from Simulated Waste Cooking Oil. UNEJ e-Proceeding. [Online] :