W. M. Wiranti, A. Reza, D. T. Ashilah, and K. Cahyari, “The Effect of Alkali Concentration and Hydrolysis Time on the Production of Oxalic Acid from Wood Sawdust Waste by Alkali Hydrolysis Process”, Chemical Engineering Transactions, vol. 106, pp. 1315-1320, Dec. 2023.