falah, hadi, et al. “Oxidation of Phenol by CWPO Method Using Nickel Manganese Oxidecatalyst Prepared in Glycerol Solvent Using Microwave in Batch Reactor”. Al-Rafidain Journal of Engineering Sciences, vol. 3, no. 1, Feb. 2025, pp. 396-09, https://doi.org/10.61268/1sdyb939.