%0 Journal Article
%A Dragomir Z. Djokovic
%T Level of a Field and the Number of Square Classes.
%J Mathematische Zeitschrift
%D 1973
%P 267-270
%V 135
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1973__135_172010/
%F MZ_1973__135_172010