F. Habashi "Recent Trends in Extractive Metallurgy" Journal of Mining and Metallurgy, Section B: Metallurgy 2009, Volume 45, pp. 1- 13. doi:10.2298/JMMB0901001H
Peter A. Tasker, Christine C. Tong, Arjan N. Westra "Co-extraction of cations and anions in base metal recovery" Coordination Chemistry Reviews 2007, vol. 251, pp. 1868–1877. doi:10.1016/j.ccr.2007.03.014
