“Spectrophotometric Determination of Methyldopa by Oxidative Coupling Reactions Using 2,4 -Dinitrophenylhydrazine Reagent”. Tikrit Journal of Pure Science 27, no. 5 (November 28, 2022): 16–22. Accessed November 8, 2026. https://www.tjpsj.org/index.php/tjps/article/view/10.