Mahatmanti, F. Widhi, et al. “Chitosan/Silica/Polyethylene/Glycol/(Ch/Si/P)/Composites/Membrane/As/Selective/Adsorbent/of/Rhodamine/B/from/Aqueous/Solution”. Asian Journal of Chemistry, vol. 29, no. 2, Nov. 2016, pp. 283-6, doi:10.14233/ajchem.2017.20157.