TY  - JOUR
AU  - Yu. G. Borisovich
TI  - On the method of Poincar\'e and Andronov in the problem of periodic solutions of differential equations with lag
JO  - Doklady Akademii Nauk
PY  - 1963
SP  - 779
EP  - 782
VL  - 152
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1963_152_4_a1/
LA  - ru
ID  - DAN_1963_152_4_a1
ER  -