@article{ASENS_1974_4_7_4_463_0,
     author = {Barge, Jean and Lannes, Jean and Latour, Fran\c{c}ois and Vogel, Pierre},
     title = {$\Lambda $-sph\`eres},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {463--505},
     publisher = {Elsevier},
     volume = {4e s{\'e}rie, 7},
     number = {4},
     year = {1974},
     doi = {10.24033/asens.1276},
     mrnumber = {51 #14108},
     zbl = {0314.55026},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1276/}
}