@article{AIHPA_1970__12_4_393_0,
     author = {Langer, J.},
     title = {Couches simples \`a sym\'etrie cylindrique en relativit\'e g\'en\'erale},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {393--413},
     publisher = {Gauthier-Villars},
     volume = {12},
     number = {4},
     year = {1970},
     mrnumber = {272343},
     language = {fr},
     url = {http://www.numdam.org/item/AIHPA_1970__12_4_393_0/}
}