1. K. Viljoen, K.C. Sole, B.K. Ferreira, L.J. Bryson, The recovery of sulphuric acid from nickel electrolyte by solvent extraction: pilot-plant evaluation, in: Proceedings of International Solvent Extraction Conference (ISEC 2008), vol. I, 2008, pp. 341–346.
2. K. Voogt, K.C. Sole, L.J. Bryson, Pilot-plant study of sulfuric acid extraction from a nickel electrolyte using Alamine 308, in: Proceedings of The Southern African Institute of Mining and Metallurgy Base Metals Conference, 2009, pp. 171–184.
3. Extraction of copper from acidic leach solution with Acorga M5640 using a pulsed sieve plate column;Ferreira;Hydrometallurgy,2010
4. Copper extraction from ammoniacal medium in a pulsed sieve-plate column with LIX 84-I;Gameiro;J. Hazard. Mater.,2010
5. Transient modeling of zinc extraction with D2EHPA in a Kühni column;Neto;Chem. Eng. Res. Des.,2013