1. S. Shaw, S. Constantinides, Permanent magnets: the demand for rare earths. Presentation, in: 8th International rare earths conference. 13–15 November 2012, Hong Kong.
2. Rare Earths: Market outlook to 2020. Roskill, 15th ed., 2015, pp. 1–337.
3. J. Liu, C. Chinnasamy, Rare earth magnets recycling, Electron Energy Corporation, Rare earth elements workshop, EPA-Colorado, 10 May 2012.
4. Recycling of Neodymium Iron Boron Magnets, Report of Investigation 9481;Lyman,1993
5. Resource recovery from Nd-Fe-B sintered magnet by hydrothermal treatment;Itakura;J. Alloys Compd.,2006