“Spectrophotometric Determination of Vancomycin Hydrochloride (Batch and Flow-Injection) Using O-Nitroaniline as diazotized Chromogenic Reagent”, Iraqi Journal of Science, vol. 56, no. 4B, pp. 3025–3035, Feb. 2023, Accessed: Dec. 19, 2024. [Online]. Available: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/9341