@article{Skrypnik_2016, title={Two-dimensional Coulomb dynamics of two and three equal negative charges in the
field of two equal fixed positive charges}, volume={68}, url={https://umj.imath.kiev.ua/index.php/umj/article/view/1939}, abstractNote={Periodic and bounded for positive time solutions of the planar Coulomb equation of motion for two and three identical
negative charges in the field of two equal fixed positive charges are found. The systems possess equilibrium configurations
to which the found bounded solutions converge in the infinite time limit. The periodic solutions are obtained with the help
of the Lyapunov center theorem.
}, number={11}, journal={Ukrainsâ€™kyi Matematychnyi Zhurnal}, author={Skrypnik, W. I.}, year={2016}, month={Nov.}, pages={1528-1539} }