@book{MSM_1929__40__1_0,
     author = {Lefschetz, S.},
     title = {G\'eom\'etrie sur les surfaces et les vari\'et\'es alg\'ebriques},
     series = {M\'emorial des sciences math\'ematiques},
     publisher = {Gauthier-Villars},
     number = {40},
     year = {1929},
     language = {fr},
     url = {http://www.numdam.org/item/MSM_1929__40__1_0/}
}