Ratphonsan, P., et al. “Grafting of Poly(2–hydroxyethyl Methacrylate) on Natural Rubber (NR–g–PHEMA): Characterizations and Water Sorption Selectivity of NR–g–PHEMA Membranes”. Journal of Applied Membrane Science & Technology, vol. 9, no. 1, Nov. 2017, doi:10.11113/amst.v9i1.67.