@phdthesis{THESE_1923__39__1_0,
     author = {Vaulot},
     title = {Congruences rectilignes qui sont en m\^eme temps {W} et de {Ribaucour}},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {39},
     year = {1923},
     mrnumber = {3532908},
     language = {fr},
     url = {http://archive.numdam.org/item/THESE_1923__39__1_0/}
}