M. K. N. Jensani, A. N. Sadikin, N. Ngadi, M. F. Azman, Z. Ab Muis, and U. A. Asli, “Anaerobic Co-Digestion of Food Waste with Crude Glycerol for Biogas Production”, Chemical Engineering Transactions, vol. 83, pp. 577-582, Feb. 2021.