Khalaf F Al Samarrai, Eman Thiab A Al Samarrai, and Baidaa Adnan Al Samarrai. 2019. “Spectrophotometric Determination of Methyldopa in Pharmaceutical Preparation via Ion Pair Formation”. International Journal of Research in Pharmaceutical Sciences 10 (2):1367-71. https://ijrps.com/home/article/view/3871.