TY  - JOUR
AU  - A. F. Filippov
TI  - Dissipativity and periodic solutions of second order nonsymmetric systems
JO  - Differencialʹnye uravneniâ
PY  - 1967
SP  - 1634
EP  - 1642
VL  - 3
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1967_3_10_a1/
LA  - ru
ID  - DE_1967_3_10_a1
ER  -