1. Metallurgical and Ceramic Protective Coatings (1st edn). Chapman & Hall: London, 1996; 1-3, 194-197, 74-75, 152-153, 169.
2. Tribology Ser;Holmberg,1994
3. Oxidation and High temperature Coatings Research Group. http://www.bham.ac.uk/metallurgy/research/oxidation.html.
4. In Intermetallics and Ceramic Coatings, (13th edn), (eds). Marcel Dekker: New York, 1999; 462-463.
5. Surface Engineering Coating Association. http://www.taol.com/seca/pvdcvd.html.