@article{AIHPC_1999__16_6_667_0,
     author = {Dias Carneiro, M. J. and Lopes, Arthur},
     title = {On the minimal action function of autonomous lagrangians associated to magnetic fields},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {667--690},
     publisher = {Gauthier-Villars},
     volume = {16},
     number = {6},
     year = {1999},
     mrnumber = {1720511},
     zbl = {0949.37033},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1999__16_6_667_0/}
}