@article{10_4064_fm_112_2_121_123,
     author = {Helmut L\"anger},
     title = {A generalization of a theorem of {Skala}},
     journal = {Fundamenta Mathematicae},
     pages = {121--123},
     publisher = {mathdoc},
     volume = {112},
     number = {2},
     year = {1981},
     doi = {10.4064/fm-112-2-121-123},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-112-2-121-123/}
}