1. Science Report Development Centre Steyr, SKF Österreich AG, Steyr;Köttritsch,2007
2. Developments in ceramic bearing balls;Schöppl;Evol.–Bus. Technol. Mag. SKF,2012
3. Rolling contact silicon nitride bearing technology: a review of recent research;Wang;Wear,2000
4. ASTM F 2094, Standard Specification for Silicon Nitride Bearing Balls,2008
5. I.S.O. 26602, Fine Ceramics (Advanced Ceramics Advanced Technical Ceramics) − Silicon Nitride Materials for Rolling Bearing Balls,2009