Y. M. Rao, K. V V, S. Reddy, J. M. Somagoni, P. K. Panakanti, and R. R C, “Preparation and Evaluation of a Gas Formation-based Multiple-Unit Gastro-Retentive Floating Delivery System of Dipyridamole ”, Scopus Indexed, vol. 5, no. 1, pp. 1607–1616, May 2012.