@article{AIHPA_1977__27_1_9_0,
     author = {Georgescu, V.},
     title = {Sur l'existence des op\'erateurs d'onde dans la th\'eorie alg\'ebrique de la diffusion},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {9--29},
     publisher = {Gauthier-Villars},
     volume = {27},
     number = {1},
     year = {1977},
     mrnumber = {459400},
     zbl = {0389.46049},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/AIHPA_1977__27_1_9_0/}
}