López-Solis, Carmen Lucía, et al. “Selective Gold Extraction Using Membranes Based on a New Polymeric Material With Complex Active Sites”. Revista De La Academia Colombiana De Ciencias Exactas, Físicas Y Naturales, vol. 44, no. 172, Sept. 2020, pp. 814-27, https://doi.org/10.18257/raccefyn.938.