1. K. Ludema, Friction, Wear and Lubrication, a Textbook in Tribology (CRC Press, Boca Raton, 1996)
2. K. Ludema, in Fundamentals of Tribology and Bridging the Gap between the Macro- and Micro/Nanoscale, ed. by B. Bhushan (Kluwer, Dordrecht, 2001)
3. I.M. Hutchings, Tribology: Friction and Wear of Engineering Materials (CRC Press, Boca Raton, 1992)
4. B. Bhushan, Springer Handbook of Nanotechnology (Springer, Berlin, 2004)
5. B. Bhushan, Principles and Applications of Tribology (John Wiley, New York, 1999)