@article{ELMA_1967__22_140861,
     author = {H.-G. Steiner},
     title = {K\"orper, in denen -1 nicht {Quadratelement} ist.},
     journal = {Elemente der Mathematik},
     pages = {97--102},
     year = {1967},
     volume = {22},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1967__22_140861/}
}