TY  - JOUR
AU  - A. Halanay
TI  - Asymptotic stability and small perturbations of periodic systems of differential equations with retarded argument
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1962
VL  - 17
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1962_17_1_a18/
LA  - ru
ID  - RM_1962_17_1_a18
ER  -