Subhe Abdulla, Muna, and Shilan Ali Omer. “Spectrophotometric Determination of Bromhexine Hydrochloride by Azo-Dye Formation Reaction”. Journal of Education and Science (JES) 22, no. 1 (March 1, 2009): 19–31. Accessed August 6, 2025. https://ojs.uomosul.edu.iq/index.php/edusj/article/view/23971.