Narayana Charyulu R.; Denish Bera; Darshan Sakhia; Keyur Manavadaria; Nisha G Shetty. Formulation and Evaluation of Bilayer Floating Tablets of Diltiazem Hydrochloride for Bimodal Release. Int. J. Res. Pharm. Sci. 2012, 3, 301-306.