TY  - JOUR
AU  - Ya. Kurzweil
TI  - Invariant sets of differential systems
JO  - Differencialʹnye uravneniâ
PY  - 1968
SP  - 785
EP  - 797
VL  - 4
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1968_4_5_a2/
LA  - ru
ID  - DE_1968_4_5_a2
ER  -