%0 Journal Article %A I. Yu. Polekhin %T A Note on Forced Oscillations in Systems on a Plane %J Russian journal of nonlinear dynamics %D 2023 %P 383-388 %V 19 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2023_19_3_a6/ %G en %F ND_2023_19_3_a6