TY  - JOUR
AU  - L. V. Zilbergleit
AU  - V. V. Lychagin
TI  - Spencer cohomology of invariant systems of differential equations
JO  - Doklady Akademii Nauk
PY  - 1993
SP  - 544
EP  - 546
VL  - 328
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1993_328_5_a3/
LA  - ru
ID  - DAN_1993_328_5_a3
ER  -