“Fabrication and In Vitro evaluation of Osmotic pump tablets for Controlled delivery of Diltiazem hydrochloride”, IJPLS, vol. 5, no. 12, pp. 4091–4095, Dec. 2014, Accessed: Feb. 25, 2026. [Online]. Available: https://ijplsjournal.com/index.php/ijpls/article/view/478