Nguyen, H., D. Ngo, T. Pham, and P. Tran. “Friedel-Crafts Benzoylation Reaction of Aromatic Compounds Using Zinc Oxide Nanoparticles in Deep Eutectic Solvent (choline Chloride/Urea) under Microwave Irradiation”. Science & Technology Development Journal: Natural Sciences, Vol. 2, no. 2, May 2019, pp. 62-70, doi:https://doi.org/10.32508/stdjns.v2i2.735.