%0 Journal Article %A A. Fröhlich %T Artin-Root Numbers and Normal Integral Bases for Quaternion Fields. %J Inventiones mathematicae %D 1972 %P 143-166 %V 17 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1972__17_142165/ %F IM_1972__17_142165