1. The mechanism of sliding on ice and snow;Bowden,1939
2. The kinetic friction of ice;Evans,1976
3. An experimental device for measuring friction between ski and snow;Keinonen;Acta Polytech. Scand., Appl. Phys. Ser.,1978
4. Coefficient of friction between ice and some construction materials, plastics and coatings;Oksanen,1980
5. Ice Physics;Hobbs,1974