1. V. A. BELYI, D. N. GARKUNOV, I. V. KRAGELSKI and A. A. POKYAKOV, in International Conference on Wear of Materials, St Louis, Missouri, 1977, edited by W. A. Galeser, K. C. Ludema and S. K. Rhee (American Society of Mechanical Engineers, New York) p. 116.
2. D. RAY, L. VINCENT, B. COQUILLET and P. GUIRANERO,Wear 65 (1980) 103.
3. K. H. ZUM GAHR, ibid.74 (1981?1982) 353.
4. Y. K. PARK and J. T. WABER,Scripta Metall. 19 (1985) 1095.
5. B. FRISCH and W. R. THIELE,Wear 95 (1984) 213.