TY  - JOUR
AU  - A. V. Sakharov
TI  - Some Trajectories of a Point in the Potential of a Fixed Ring and Center
JO  - Russian journal of nonlinear dynamics
PY  - 2019
SP  - 587
EP  - 592
VL  - 15
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ND_2019_15_4_a18/
LA  - en
ID  - ND_2019_15_4_a18
ER  -