1. Carheiro-Bsteves (A.). Resolution du contact elastique entre deux corps rugueux, These de Doctorat, I. M. S. A Lyon, Nov. 1987, 157 p.
2. Kalker (J.J). – Two algorithms for the contact problem in elastostatics. Reports of the Department of Mathematics and Informatics, 1982 Delft, n° 82–26.
3. Tobe (T.), Inoue (K.). – Longitudinal load distribution factors of spur gear teeth, Congres Hondial des Engrenages, Paris, June 1977 1, p. 211–225.