@article{1183423671,
author = {Williams, K. P.},
title = {Concerning Hill's derivation of the Lagrange equations of motion},
journal = {Bull. Amer. Math. Soc.},
volume = {23},
number = {2},
year = {1916},
pages = { 455-457},
language = {en},
url = {http://dml.mathdoc.fr/item/1183423671}
}
Williams, K. P. Concerning Hill's derivation of the Lagrange equations of motion. Bull. Amer. Math. Soc., Tome 23 (1916) no. 2, pp. 455-457. http://gdmltest.u-ga.fr/item/1183423671/