Eswar kumar.A, A.Vaishnavi, S.Ayesha, V.Saritha, and M. Radhika. “Formulation and Evaluation of Sustained Release Matrix Tablets of Nifedipine”. International Journal of Pharmacy and Analytical Research, vol. 4, no. 3, Aug. 2015, pp. 219-2, doi:10.61096/ijpar.v4.iss3.2015.219-229.