“Spectrophotometric Determination of Vancomycin Hydrochloride in Pharmaceutical Preparations through Diazotization and Coupling Reactions”. Iraqi Journal of Science 55, no. 4B (October 22, 2023): 1684–1693. Accessed May 20, 2024. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11280.