TY  - JOUR
AU  - B. P. Demidovich
AU  - Yu. V. Malyshev
TI  - Further development of the theorem of N.\,G.~{\v C}etaev on the instability of motion
JO  - Differencialʹnye uravneniâ
PY  - 1977
SP  - 841
EP  - 847
VL  - 13
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1977_13_5_a4/
LA  - ru
ID  - DE_1977_13_5_a4
ER  -