@article{MM2_1979__30_154689,
     author = {Bruno Zimmermann},
     title = {\"Uber {Gruppen} von {Hom\"oomorphismen} {Seifertscher} {Faserr\"aume} und flacher {Manigfaltigkeiten.}},
     journal = {Manuscripta mathematica},
     pages = {361--374},
     publisher = {mathdoc},
     volume = {30},
     year = {1979},
     zbl = {0438.57005},
     url = {http://geodesic.mathdoc.fr/item/MM2_1979__30_154689/}
}