%0 Journal Article
%A John N. Mather
%T Integrability in Codimension 1
%J Commentarii mathematici Helvetici
%D 1973
%P 195-233
%V 48
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMH_1973__48_139547/
%F CMH_1973__48_139547