1. Mobility and energy futures—perspectives toward 2035 report by CRU prepared for Glencore
2. Nelli JR, Arthur TE (1970) Assigned to lithium corporation of America and listing as inventors. US Patent no. 3,537,813 Published 3 Nov 1970
3. Jorge J (2015) Secondary zinc as part of the supply chain and the rise of EAF dust recycling, International Lead and Zinc Study Group
4. Cole PM, Sole KC (2002) Solvent extraction in the primary and secondary processing of zinc. J S Afr Inst Mining Metall 2002:451–456
5. Gnoinski J, Sole KC, Sward DR, Maluleke RF, Diaz G, Sanchez F (2008) Highlights and hurdles in zinc refining by solvent extraction: the Skorpion Zinc experience. In: Proceedings of ISEC 2008, Tucson, USA, vol 1, pp 201–208