formalisme lagrangien

[1983] J. L. Lagrange's early contributions to the principles and methods of mechanics ; Craig Fraser ; Archive for history of exact sciences 28 (1983) p. 197 [lien]
[2005] [Notes and Discussions] Shortcut to the Slingshot Effect ; Kenneth J. Epstein ; American Journal of Physics 73 (avr 2005) p. 362 [lien]