Vassa, Swetal P., P. P. Vairagar, S. V. Mulgund, and R. V. Korhale. 2013. “RP-HPLC Method Development And Validation For Simultaneous Estimation Of Ramipril And S (-) Amlodipine In Tablet Dosage Form”. Asian Journal of Pharmaceutical Research and Development 1 (4):81-87. https://ajprd.com/index.php/journal/article/view/94.