A. Caniago, W. Mangunwidjaja, S. Nuswantara, and P. Lisdiyanti, “Improvement of Endoglucanase Activity in Penicillium oxalicum ID10-T065 Mutated by Ultra Violet Irradiation and Ethidium Bromide”, Ann. Bogor., vol. 19, no. 2, pp. 27–38, Dec. 2015.