@phdthesis{THESE_1923__43__1_0,
     author = {Mentr\'e, Paul},
     title = {Les vari\'et\'es de l'espace r\'egl\'e \'etudi\'ees dans leurs propri\'et\'es infinit\'esimales projectives},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {43},
     year = {1923},
     language = {fr},
     url = {http://archive.numdam.org/item/THESE_1923__43__1_0/}
}