1. Hertz, H.
, 1881, “Ueber die Beruehrung fester elastische Koerper (On the contact of elastic solids),” J. fuer reine und angewandte Mathematik, 92, pp. 156–171.
2. Harris, T. A., 1966, Rolling Bearing Analyses, Wiley, New York.
3. Johnson, K. L., 1987, Contact Mechanics, Cambridge University Press, Cambridge.
4. Jones, D. E., and Schott, G. A., eds., 1896, Miscellaneous Papers by H. Hertz, Macmillan, London.