1. Synopsis of the results from an international cooperative wear program;Begelinger;Lubr. Eng.,1970
2. Review of the activities of the OECD Group of Experts on Wear of Engineering Materials;de Gee;TNO Nieuws,1966
3. Tribology — A Systems Approach to the Science and Technology of Friction, Lubrication and Wear;Czichos,1978