1. Tungsten : Properties, Chemistry, Technology of the Element, Alloys and Chemical Compounds;Lassner,1999
2. Tungsten;Shedd,2009
3. Tungsten status and cemented carbide development;Ahn;Trends Met Mater Eng,2008
4. Recycle of tungsten carbide and mill scrap;Kieffer,1981
5. Processes for the recycling of tungsten carbide scrap;Kieffer;Int J Refract Met Hard Mater,1986