TY - JOUR AU - A. V. Sakharov TI - Dynamics of a~point in the~axisymmetric gravitational potential of a~massive fixed ring and center JO - Teoretičeskaâ i matematičeskaâ fizika PY - 2021 SP - 319 EP - 330 VL - 207 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_2021_207_2_a10/ LA - ru ID - TMF_2021_207_2_a10 ER -