@article{JMPA_1931_9_10__307_0,
     author = {Labrousse, A.},
     title = {Vecteurs complexes et cercles orthogonaux \`a une sph\`ere. {Parataxie}},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {307--334},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 10},
     year = {1931},
     zbl = {0002.28304},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1931_9_10__307_0/}
}