Chaudhary, J., and S. Joshi. “SYNTHESIS, CHARACTERIZATION AND SWELLING BEHAVIOR STUDIES OF GUAR GUM-GRAFTED-ACRYLAMIDE-CO-HYDROXYETHYL METHACRYLATE HYDROGEL”. Journal of Advanced Scientific Research, Vol. 11, no. 02, May 2020, pp. 217-20, https://sciensage.info/index.php/JASR/article/view/497.