@book{MSM_1965__160__1_0,
     author = {Combet, E.},
     title = {Solutions \'el\'ementaires des dalembertiens g\'en\'eralis\'es},
     series = {M\'emorial des sciences math\'ematiques},
     publisher = {Gauthier-Villars},
     number = {160},
     year = {1965},
     mrnumber = {188624},
     zbl = {0127.04907},
     language = {fr},
     url = {http://archive.numdam.org/item/MSM_1965__160__1_0/}
}