%0 Journal Article
%A M.-A. Knus
%A R. Parimala
%A M. Ojanguren
%T Positive-definite quadratic bundles over the plane.
%J Commentarii mathematici Helvetici
%D 1982
%P 400-411
%V 57
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMH_1982__57_139914/
%F CMH_1982__57_139914