1. Wu S.M. Kapoor S.G. Deuries M.F. Characterization of coated abrasive wear by statistical invariants. Proc. N. Am. Res. Conf. VI 1978 346-350.
2. Characterization of random roughness profiles;Stanfert;Annals CIRP,1979
3. Elastic deformation and the laws of friction
4. Contact of nominally flat surfaces
5. Scattering of electromagnetic radiation from rough surfaces;Beckman,1963