Dung, N. T., N. T. Lan Anh, D. T. Oanh, and N. H. Dung. “Development of Spectrophotometric Method for Determination of Mesalazine in Pharmaceutical Preparation”. Vietnam Journal of Chemistry, vol. 54, no. 4, Aug. 2016, p. 509, doi:10.15625/0866-7144.2016-00356.