@article{BAG_1986__23_138352,
     author = {H.-G. Gr\"abe},
     title = {\"Uber {Streckungsringe}},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {85--100},
     year = {1986},
     volume = {23},
     url = {http://geodesic.mathdoc.fr/item/BAG_1986__23_138352/}
}