1. Minerals of Broken Hill,1982
2. Encyclopedia of Minerals;Roberts,1974
3. Mineral and Coal Flotation Circuits;Lynch,1981
4. Chapter 5 in Chemistry of Flotation;Fuerstenau;American Institute of Mining, Metallurgical & Petroleum Engineers,1985
5. FTIR Analysis of Sulphide Mineral Surfaces Before & After Collection: Galena;Cases,1991