Voir la notice de l'article provenant de la source European Digital Mathematics Library
@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}, publisher = {mathdoc}, volume = {22}, year = {1967}, language = {de}, url = {http://geodesic.mathdoc.fr/item/ELMA_1967__22_140861/} }
H.-G. Steiner. Körper, in denen -1 nicht Quadratelement ist.. Elemente der Mathematik, Tome 22 (1967), pp. 97-102. http://geodesic.mathdoc.fr/item/ELMA_1967__22_140861/