@article{RLINA_1988_8_82_3_a8,
     author = {Bressan, Aldo},
     title = {On control theory and its applications to certain problems for {Lagrangian} systems. {On} hyper-impulsive motions for these. {III.} {Strengthening} of the characterizations performed in parts {I} and {II,} for {Lagrangian} systems. {An} invariance property.},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali},
     pages = {461--471},
     publisher = {mathdoc},
     volume = {Ser. 8, 82},
     number = {3},
     year = {1988},
     zbl = {0721.70021},
     mrnumber = {1151699},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLINA_1988_8_82_3_a8/}
}