Ferfera-Harrar, H. , Aiouaz, N. , Dairi, N. (2015), 'Synthesis and Properties of Chitosan-Graft Polyacrylamide/Gelatin Superabsorbent Composites for Wastewater Purification', World Academy of Science, Engineering and Technology, Open Science Index 103, International Journal of Chemical and Molecular Engineering, 9(7), 849 - 856.