TY  - JOUR
AU  - G. S. Osipenko
TI  - Integrability of invariant plane fields, separation and partial hyperbolicity
JO  - Differencialʹnye uravneniâ
PY  - 1983
SP  - 1687
EP  - 1693
VL  - 19
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1983_19_10_a4/
LA  - ru
ID  - DE_1983_19_10_a4
ER  -