@article{CMUC_1979__20_3_a1,
     author = {Hahn, Siegfried},
     title = {Ein {St\"orungssatz} f\"ur positive {Eigenwerte} kondensierender mengenwertiger {Abbildungen} in lokalkonvexen topologischen {Vektorr\"aumen}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {417--430},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {1979},
     mrnumber = {550445},
     zbl = {0416.47020},
     language = {ge},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1979__20_3_a1/}
}