TY  - JOUR
AU  - Vladimir Yu. Ol'shanskii
TI  - On quadratic integral Poincare--Zhukovsky's equations
JO  - Russian journal of nonlinear dynamics
PY  - 2012
SP  - 523
EP  - 540
VL  - 8
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ND_2012_8_3_a7/
LA  - ru
ID  - ND_2012_8_3_a7
ER  -