Drogobuzhskaya, S. V., A. A. Shirokaya, and S. A. Solov’ev. “SORPTION EXTRACTION OF PLATINUM METALS FROM CHLORIDE – SULFATE AND SULFATE ACIDIC SOLUTIONS BY POLYACRYLONITRILE FIBERS FIBAN”. ChemChemTech, Vol. 62, no. 11, Nov. 2019, pp. 117-25, doi:10.6060/ivkkt.20196211.5982.