G. SURESH (2013) “FORMULATION AND EVALUATION OF FLOATING GASTRORETENTIVE DRUG DELIVERY SYSTEM OF DILTIAZEM HYDROCHLORIDE”, International Journal of Pharma and Bio Sciences, 4(2), pp. 538–548. Available at: https://ijpbs.net/index.php/journal/article/view/2201 (Accessed: 3 July 2026).