TY  - JOUR
AU  - N. A. Izobov
AU  - E. N. Krupchik
TI  - Necessary Properties of Boundary Degree Sets of Solutions to Linear Pfaff Systems
JO  - Differencialʹnye uravneniâ
PY  - 2001
SP  - 616
EP  - 627
VL  - 37
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2001_37_5_a5/
LA  - ru
ID  - DE_2001_37_5_a5
ER  -