1. ABAQUS Finite Element Analysis, SIMULIA website, Dassault Systèmes, visited in May 2010 to July 2011. http://www.simulia.com/support/documentation.html.
2. Contact and rubbing of flat surfaces;Archard;Journal of Applied Physics,1953
3. Modern Tribology Handbook;Bhushan,2000
4. Computational fluid dynamics analysis on very high temperature reactor air ingress;Chang,2009
5. Pebble bed reactor dust production model;Cogliati,2008