%0 Journal Article
%A Ludwig Bröcker
%T Characterization of Fans and Hereditarily Pythagorean Fields.
%J Mathematische Zeitschrift
%D 1976
%P 149-164
%V 151
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1976__151_172440/
%F MZ_1976__151_172440