M. Ramanathan, S. Manikandan, L. Subramanian, and P. Solairaj, “GASTRO RETENTIVE NON-FLOATING DRUG DELIVERY APPROACH: A REVIEW”, J. Drug Delivery Ther., vol. 8, no. 4, pp. 20–23, Jul. 2018, doi: 10.22270/jddt.v8i4.1725.