Sultana, S., S. Talegaonkar, A. Bhatnagar, F. J. Ahmad, and G. Mittal. “Optimization of Nifedipine Loaded Gastroretentive Microcapsules for Biliary Colic”. Asian Journal of Pharmaceutics (AJP), vol. 6, no. 4, Aug. 2014, doi:10.22377/ajp.v6i4.218.