Skrypnik WI. Coulomb planar periodic motion of equal charges in the field of attractive centers and a constant magnetic field . Dopov. Nac. akad. nauk Ukr. [Internet]. 2024 Oct. 10 [cited 2024 Dec. 23];(3):19-25. Available from: https://nasu-periodicals.org.ua/index.php/dp/article/view/8596