N. Nor’Azmi and N. Shoparwe, “Functionalized Chitosan-Modified PVDF-co-HFP Polymer Inclusion Membrane for Enhanced Au(III) Extraction”, Kompl. Ispolz. Min. Syra = Compl. Use of Min. Resour., vol. 346, no. 3, pp. 64–71, Aug. 2026.