%0 Journal Article
%A Shuzo Izumi
%T The Exterior Derivation and the Orders of Differential Forms on Contractible Algebras.
%J Mathematische Annalen
%D 1979
%P 31-36
%V 243
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1979__243_182798/
%F MAN_1979__243_182798