1. Some experiments on running-in and scuffing of disks;Christensen;Acta Polytech. Scand. Mech. Eng. Ser.,1966
2. Chemical changes in steel surfaces during extreme pressure lubrication;Godfrey;Trans. Am. Soc. Lubrication Engrs.,1962
3. Study of the wear of cast iron by X-ray analysis;Okabayashi;Imono,1965
4. Wear of cast iron in vacuum and frictional hardened layers;Okabayashi;J. Japan Inst. Metals (Sendai),1968
5. Surface film formation and metallic wear;Hirst;J. Appl. Phys.,1956