@book{MSM_1950__115__1_0,
     author = {Charrueau, Andr\'e},
     title = {Sur des congruences de droites ou de courbes et sur une transformation de contact li\'ee \`a ces congruences},
     series = {M\'emorial des sciences math\'ematiques},
     publisher = {Gauthier-Villars},
     number = {115},
     year = {1950},
     mrnumber = {42186},
     zbl = {0039.17102},
     language = {fr},
     url = {http://www.numdam.org/item/MSM_1950__115__1_0/}
}