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2. Tribology - A Systems Approach to the Science and Technology of Friction;Czichos,1978
3. J. A. Schey, Tribology in Metalworking - Friction, Lubrication and Wear, American Society for Metals, Metals Park, Ohio, 1983.
4. Lubricants and Lubrication in Metalworking Operations;Nachtman,1985