TY  - JOUR
AU  - Shuzo Izumi
TI  - The Exterior Derivation and the Orders of Differential Forms on Contractible Algebras.
JO  - Mathematische Annalen
PY  - 1979
SP  - 31
EP  - 36
VL  - 243
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1979__243_182798/
ID  - MAN_1979__243_182798
ER  -