%0 Journal Article
%A A. P. Shirokov
%T The space $H_4$ and quaternion algebra
%J Trudy Geometricheskogo Seminara
%D 1997
%P 187-198
%V 23
%I mathdoc
%U http://geodesic.mathdoc.fr/item/KUTGS_1997_23_a16/
%G ru
%F KUTGS_1997_23_a16