V, L., D. P, S. S. A, K. Sk, N. manna BC, and N. P. “FORMULATION AND IN-VITRO EVALUATION OF NIFEDIPINE SUSTAINED RELEASE TABLETS ”. International Journal of Pharmacometrics and Integrated Biosciences, Vol. 2, no. 2, Apr. 2017, pp. 78-83, https://scienztech.org/index.php/ijpib/article/view/961.