“First Derivative Spectrophotometric Method for the Simultaneous Estimation of Valsartan and Hydrochlorthiazide in Their Combined Dosage Form”. International Journal of Pharmacy and Life Sciences 3, no. 7 (July 30, 2012): 1828–1832. Accessed February 4, 2026. https://ijplsjournal.com/index.php/ijpls/article/view/812.