TY  - JOUR
AU  - Gleb E. Smirnov
TI  - Focus-focus singularities in classical mechanics
JO  - Russian journal of nonlinear dynamics
PY  - 2014
SP  - 101
EP  - 112
VL  - 10
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ND_2014_10_1_a6/
LA  - ru
ID  - ND_2014_10_1_a6
ER  -