“Spectrophotometric Determination of Vancomycin Hydrochloride (Batch and Flow-Injection) Using O-Nitroaniline As Diazotized Chromogenic Reagent”. 2023. Iraqi Journal of Science 56 (4B): 3025-35. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/9341.