W.C. Chee, W.S. Ho, C. Bong, H. Hashim, K.Y. Wong, M.A. Zubir, L.K. Lim, Mathematical Modelling for Organic Waste Resources Targeting and Optimization using Carbon-to-Nitrogen Ratio, Chemical Engineering Transactions. 97 (2022) 235-240. doi:10.3303/CET2297040.