S. Othman, N., نبیل, Ali Omer, S. and شیلان (2009) “Spectrophotometric Determination of Bromhexine Hydrochloride by Azo-Dye Formation Reaction”, Journal of Education and Science (JES), 22(1), pp. 19–31. doi: 10.33899/edusj.2009.57438.