1. Investigations on application of ion-exchange membranes for processing of electrolyte from elektrorefining of copper;Krynicki,1973
2. Complex Application of Material in Colour Metallurgy;Okunev,1980
3. Extractive Copper, Nickel and Cobalt;Bush,1961
4. The method of purification of nickel sulfate, particularly that formed in raw copper electrorefining;Pawlowski,1985