1. Friction and Lubrication of Solids;Bowden,1954
2. Elastic deformation and laws of friction;Archard,1957
3. Contact of nominally flat surfaces;Greenwood,1966
4. The properties of random surfaces of significance in their contact;Whitehouse,1970
5. The contact of surfaces having a random structure;Onions;J. Phys. D,1973