TY  - JOUR
AU  - S. V. Zubov
TI  - The stability of periodic motion
JO  - Differencialʹnye uravneniâ
PY  - 1979
SP  - 974
EP  - 979
VL  - 15
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1979_15_6_a1/
LA  - ru
ID  - DE_1979_15_6_a1
ER  -