Indriawan, A., T. ., W. Mangunwardoyo, and D. Suhendar. “Lipase Activity Enhancement of KC4J Mutant from Oil Palm Waste Using Response Surface Method and Characterization”. Microbiology Indonesia, vol. 16, no. 1, June 2022, pp. 1-12, doi:10.5454/mi.16.1.1-12.