1. Recycling the platinum group metals: A European perspective;Hageluken;Platinum Metals Rev.,2012
2. D. R. Wilburn, D. I. Bleiwas, Platinum-group metals- world supply and demand, US geological survey open-file report 1224, 2004-1224. https://doi.org/10.3133/ofr20041224.
3. F. Mathieux, F. Ardente, S. Bobba, P. Nuss, G. Blengini, P. Alves Dias, D. Blagoeva, C. Torres de Matos, D. Wittmer, C. Pavel, T. Hamor, H. Saveyn, B. Gawlik, G. Orveillon, D. Huygens, E. Garbarino, E. Tzimas, F. Bouraoui, S. Solar,, Critical raw materials and the circular economy, Publications Office of the European Union, Luxembourg, 2017, doi:10.2760/378123.
4. A. Cowley, J. Matthey, PGM market report, May 2019. http://www.platinum.matthey.com/documents/new-item/pgm%20market%20reports/pgm_market_report_may_19.pdf (accessed 20 January 2020).
5. Industrial applications of molecular recognition technology to separations of platinum group metals and selective removal of metal impurities from process streams;Izatt;Green Chem.,2015