Ashtaputrey, Prashant, and Santosh Ashtaputrey. “STUDY OF SWELLING BEHAVIOR AND DETERMINATION OF SWELLING PARAMETERS OF SPHERICAL HYDROGELS IN WATER”. Journal of Drug Delivery and Therapeutics, vol. 8, no. 4, July 2018, pp. 218-22, https://doi.org/10.22270/jddt.v8i4.1775.