A. Zakaria, R. “Spectrophotometric Dertermination of Mesalazine by 8-Hydroxyquinoline and N-(1-naphthyl)ethylenediamine Dihydrochloride Reagents in Bulk and Capsule Dosage Forms”. Rafidain Journal of Science, vol. 24, no. 1, Jan. 2013, pp. 146-58, doi:10.33899/rjs.2013.67591.