Bhardwaj, S., M. K. Gupta, and V. Bhalla. “METHOD DEVELOPMENT AND VALIDATION OF STABILITY INDICATING UPLC ASSAY METHOD FOR NIFEDIPINE”. International Journal of Drug Regulatory Affairs, Vol. 3, no. 4, Feb. 2018, pp. 24-42, doi:10.22270/ijdra.v3i4.174.