Araw E. Ahmed, and Khalida M. Omar. “Spectrophotometric Estimation of Sulfasalazine Via Oxidative Coupling Reaction Using 8-Amino -2-Naphthlene Sulfonic Acid and Potassium Periodate”. African Journal of Advanced Pure and Applied Sciences, vol. 2, no. 3, July 2023, pp. 127-39, doi:10.65418/ajapas.v2i3.450.