@article{MAN_1979__243_182812,
     author = {Volker M\"uller-Horrig},
     title = {Fredholmspektren verbundener {Operatoren.}},
     journal = {Mathematische Annalen},
     pages = {171--180},
     publisher = {mathdoc},
     volume = {243},
     year = {1979},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1979__243_182812/}
}