“Quantification of Methotrexate by Liquid Chromatography Ultraviolet Detection for Routine Monitoring of Plasma Levels: Quantification of Methotrexate”, Pakistan Journal of Scientific & Industrial Research, vol. 52, no. 3, pp. 154–157, Jun. 2009, Accessed: Mar. 11, 2026. [Online]. Available: https://www.v2.pjsir.org/index.php/biological-sciences/article/view/540