%0 Journal Article
%A M. Szyjewski
%T The fifth invariant of quadratic forms
%J Algebra i analiz
%D 1990
%P 213-234
%V 2
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_1990_2_1_a7/
%G ru
%F AA_1990_2_1_a7