@book{MSM_1938__89__1_0,
     author = {Valiron, Georges},
     title = {Directions de {Borel} des fonctions m\'eromorphes},
     series = {M\'emorial des sciences math\'ematiques},
     publisher = {Gauthier-Villars},
     number = {89},
     year = {1938},
     zbl = {0018.07303},
     language = {fr},
     url = {http://www.numdam.org/item/MSM_1938__89__1_0/}
}