TY  - JOUR
AU  - È. I. Grudo
TI  - Complete integrability of linear Pfaffian systems and conditions for linear independence of analytic functions of several variables
JO  - Differencialʹnye uravneniâ
PY  - 1986
SP  - 891
EP  - 894
VL  - 22
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1986_22_5_a23/
LA  - ru
ID  - DE_1986_22_5_a23
ER  -