TY  - JOUR
AU  - A. I. Perov
TI  - A certain generalization of the Frobenius theorem
JO  - Differencialʹnye uravneniâ
PY  - 1969
SP  - 1881
EP  - 1884
VL  - 5
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1969_5_10_a14/
LA  - ru
ID  - DE_1969_5_10_a14
ER  -