@book{MSM_1925__9__1_0,
     author = {Cartan, \'Elie},
     title = {La g\'eom\'etrie des espaces de {Riemann}},
     series = {M\'emorial des sciences math\'ematiques},
     publisher = {Gauthier-Villars},
     number = {9},
     year = {1925},
     language = {fr},
     url = {http://www.numdam.org/item/MSM_1925__9__1_0/}
}