1. Der Einfluss von Ultraschall-Schwingungen auf metallische Reibungsvorgänge;Pohlman,1965
2. The investigation of the static friction at the direction of sliding at low-frequency external vibrations;Weic,1962
3. The influence of external vibrations upon the friction process of metals;Lenkiewicz;Sci. Bull. Acad. Mining Met. No. 192,1967
4. The Friction and Lubrication of Solids;Bowden,1954
5. A study of the stick-slip process;Rabinowicz,1959