B. Dwi Argo, Y. Hendrawan, D. M. Maharani, A. W. Putranto, and S. Winarsih, “The Effect of Microwave-NaOH Pretreatment and Hydrolysis Enzyme Using Trichoderma reesei-Aspergillus niger on Rice Straw Bioethanol Production”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 6, no. 1, pp. 20–26, Jan. 2016.