This publication is cited in the following articles:
Yu. N. Bibikov, E. V. Vasil'eva, “Periodic Perturbations of Oscillators on a Plane”, Vestnik St.Petersb. Univ.Math., 57:1 (2024), 23
V. V. Basov, Yu. N. Bibikov, “Normal Form and Stability of the Zero Solution to a Second-Order Periodic Reversible ODE with a Small Parameter”, Vestnik St.Petersb. Univ.Math., 57:4 (2024), 472
Yu. N. Bibikov, E. V. Vasileva, “Periodicheskie vozmuscheniya ostsillyatorov na ploskosti”, Vestnik Sankt-Peterburgskogo universiteta. Matematika. Mekhanika. Astronomiya, 11:1 (2024), 38–47