1. The development of a torsion damper;Kirshenboim;Eng. Mater. Des. May,1977
2. The RAPRA Damper;Norman;RAPRA Bull.,1963
3. British Patent 1 036 191, 13 July 1966
4. Hysteresis losses in rolling and sliding friction;Greenwood,1961
5. Rolling friction on viscoclastic substrates;Gent;Trans. Soc. Rheol.,1969