Biswas, Pizush, Enamul Huq, MT Rahman, and Husna Nur. “Synthesis Of 2-Benzoyl-3,4,5,6-Tetrasubstitutedbenzoic Acid From Tetrasubstituted Phthalic Anhydride Using Organometalics”. Journal of the Bangladesh Chemical Society 25, no. 2 (May 27, 2013): 186-193. Accessed May 23, 2019. https://www.banglajol.info/index.php/JBCS/article/view/15085.