K. Y. K. Sikdar, A. Ahamed, M. M. Alam, M. R. Sarkar, and B. Sajeeb, “Formulation and In-vitro Evaluation of Bilayer Tablets of Atenolol and Amlodipine”, Bangla Pharma J, vol. 22, no. 2, pp. 153–169, Jul. 2019.