1. A.S. LAPIDUS, (1967), Research on Machine Tool Slideway Wear 8th Int. M.T.D.R. Conference.
2. E. RABINOWICZ, (1966), Friction and Wear of Materials, John Wiley and Sons, Inc.
3. E. FINKIN, (1969), Surface Rougness in Wear Wear, Vol. 6.
4. J.T. BURWELL, (1957–8), Survey of Possible Wear Mechanisms, Wear, Vol. 1.
5. F.B. BOWDEN, and D. TABOR, (1964), The Friction and Lubrication of Solids, Oxford at the Clerandon Press.