Swelling behavior of poly (2-hydroxyethyl methacrylate) copolymer gels S.M. Chabane Sari, M. Benmouna, M. Mahlous and M. Kaci MATEC Web of Conferences, 5 (2013) 04008 Published online: 09 September 2013 DOI: 10.1051/matecconf/20130504008