G. Lakshmanamurthy, S. Jeevanandham, and G. P. Kumar, “FORMULATION AND IN VITRO EVALUATION OF GASTRORETENTIVE FAMOTIDINE HOLLOW MICROSPHERES”, J. Drug Delivery Ther., vol. 3, no. 6, pp. 207–214, Nov. 2013, doi: 10.22270/jddt.v3i6.703.