@article{RLINA_1987_8_81_4_a3,
     author = {Pignedoli, Antonio},
     title = {On the differential equations of the classical and relativistic dynamics for certain generalised {Lagrangian} functions},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali},
     pages = {361--372},
     publisher = {mathdoc},
     volume = {Ser. 8, 81},
     number = {4},
     year = {1987},
     zbl = {0667.70022},
     mrnumber = {0999827},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLINA_1987_8_81_4_a3/}
}