Soleimani, F. et al. 2013. Drug Release Study from Superabsorbent Hydrogel Based on Poly-2-acrylamido-2-methylpropanesulfonic Acid Grafted Collagen. Asian Journal of Chemistry. 25, 8 (Mar. 2013), 4619–4623. DOI:https://doi.org/10.14233/ajchem.2013.14310B.