@article{AIHPA_1996__64_2_177_0,
     author = {Vitolo, Raffaele},
     title = {Spherical symmetry in classical and quantum {Galilei} general relativity},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {177--203},
     publisher = {Gauthier-Villars},
     volume = {64},
     number = {2},
     year = {1996},
     mrnumber = {1386216},
     zbl = {0854.53071},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPA_1996__64_2_177_0/}
}