1. Cemented Tungsten Carbides: Production, Properties and Testing;Upadhyaya,1998
2. Modern hydrometallurgical production methods for tungsten;Gaur;J. Miner. Metall. Mater. Soc.,2006
3. M. Shamsuddin, H.Y. Sohn, Extractive metallurgy of tungsten, in: Proceedings of the TMS AIME Symposium. TMS, Warrendale, Chicago, 1981, pp.205–230.
4. Tungsten Properties, Chemistry, Technology of the Element;Lassner,1999
5. Recovery of tungsten by liquid–liquid extraction from a wolframite concentrate after fusion with sodium hydroxide;Paulino;Hydrometallurgy,2012