@book{MSM_1952__118__1_0,
     author = {Parodi, Maurice},
     title = {Sur quelques propri\'et\'es des valeurs caract\'eristiques des matrices carr\'ees},
     series = {M\'emorial des sciences math\'ematiques},
     publisher = {Gauthier-Villars},
     number = {118},
     year = {1952},
     mrnumber = {49851},
     zbl = {0046.01401},
     language = {fr},
     url = {http://archive.numdam.org/item/MSM_1952__118__1_0/}
}