@article{BAG_1987__24_138366,
     author = {Konrad Fichtner and Juliana Grell},
     title = {Drei {M\"oglickeiten} der algebraischen {Beschreibung} totaler und partieller {Symmetrien} bei {Kristallstrukturen}},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {159--176},
     publisher = {mathdoc},
     volume = {24},
     year = {1987},
     zbl = {0609.20032},
     url = {http://geodesic.mathdoc.fr/item/BAG_1987__24_138366/}
}