@article{MAN_1973__201_162369,
     author = {Hans Werner Schuster and Klaus-Werner Wiegmann},
     title = {Komplexe {Unterstrukturen} mit endlichen {Tr\"agern.}},
     journal = {Mathematische Annalen},
     pages = {19--32},
     publisher = {mathdoc},
     volume = {201},
     year = {1973},
     zbl = {0268.32009},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__201_162369/}
}