Yousef, F., & Al-Abachi, M. (2023). Normal and Reverse Flow Injection- Spectrophotometric Determination of Vancomycin Hydrochloride in Pharmaceutical Preparations Using 2, 4-Dinitrophenylhydrazine. Iraqi Journal of Science, 55(2B), 623-633. https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11742