@article{AM2_1977__15_136656,
     author = {Karl Strambach and Peter Plaumann},
     title = {Zweidimensionale {Quasialgebren} mit {Nullteilern.}},
     journal = {Aequationes mathematicae},
     pages = {249--264},
     year = {1977},
     volume = {15},
     zbl = {0375.17012},
     url = {http://geodesic.mathdoc.fr/item/AM2_1977__15_136656/}
}