1. The Friction and Lubrication of Solid;Bowden,1964
2. R. Holm, Electric Contacts, in: H. Gebers (Ed.), Stockholm, 1946, p. 214.
3. Contact and rubbing of flat surfaces;Archard;J. Appl. Phys.,1946
4. Principles of abrasive wear;Khruschov;Wear,1974
5. Friction and Wear of Materials;Rabinowiez,1995