TY  - JOUR
AU  - V. A. Yakubovich
TI  - Frequency conditions for certain topological types of behavior “in the large” of solutions of nonlinear differential equation
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1970
VL  - 25
IS  - 6
UR  - http://geodesic.mathdoc.fr/item/RM_1970_25_6_a16/
LA  - ru
ID  - RM_1970_25_6_a16
ER  -