1. The mechanism of sliding on ice and snow;Bowden,1939
2. Friction between plastics and ice;Lehtovaara;Tribologia Finn. J. Tribol.,1985
3. Friction between ski and snow;Suominen,1983
4. The kinetic friction of ice;Evans,1976
5. The mechanism of friction of ice;Oksanen;Wear,1982