TY  - JOUR
AU  - G. S. Krechetov
TI  - Lyapunov functions for second-order autonomous systems of first and second classes
JO  - Differencialʹnye uravneniâ
PY  - 1982
SP  - 772
EP  - 778
VL  - 18
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1982_18_5_a6/
LA  - ru
ID  - DE_1982_18_5_a6
ER  -