Ramakrishna Reddy Voggu, and Ravi Teja. “Formulation and in-Vitro Evaluation of PH Responsive Mini-Tablets for Nadolol Colonic Drug Delivery System”. World Journal of Pharmaceutical Sciences, vol. 7, no. 10, Oct. 2019, pp. 33-38, https://wjpsonline.com/index.php/wjps/article/view/formulation-in-vitro-evaluation-nadolol-colonic-dds.