@article{ASENS_1959_3_76_4_305_0,
     author = {Lagrange, Ren\'e},
     title = {Sur les syst\`emes isogonaux de sph\`eres},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {305--399},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 76},
     number = {4},
     year = {1959},
     doi = {10.24033/asens.1085},
     mrnumber = {22 #7017},
     zbl = {0096.35706},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1085/}
}