@article{ASNSP_1988_4_15_3_467_0,
     author = {Degiovanni, Marco and Giannoni, Fabio},
     title = {Dynamical systems with newtonian type potentials},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {467--494},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 15},
     number = {3},
     year = {1988},
     mrnumber = {1015804},
     zbl = {0692.34050},
     language = {en},
     url = {http://archive.numdam.org/item/ASNSP_1988_4_15_3_467_0/}
}