A. . Abdullwahid Jasim, “Three Simple Spectrophotmetric Methods Using for Estimation of Vancomycin in Pure and Vial Injection”, Al-Nahrain J. Sci., vol. 23, no. 1, pp. 35–42, Mar. 2020, Accessed: May 22, 2026. [Online]. Available: https://anjs.edu.iq/index.php/anjs/article/view/2238