SULTANA, Y., K. KOHLI, R. KHAR AND, and M. AQIL. 2018. “Preparation and Dissolution Characteristics of Sustained Release Diltiazem Hydrochloride Tablets”. The East and Central African Journal of Pharmaceutical Sciences 9 (2), 40-45. https://uonjournals.uonbi.ac.ke/ojs/index.php/ecajps/article/view/42.