TY  - JOUR
AU  - I. B. Gontareva
TI  - On the existence of closed trajectories of structurally stable autonomous systems
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 1987
SP  - 11
EP  - 13
IS  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_1987_8_a1/
LA  - ru
ID  - IVM_1987_8_a1
ER  -