%0 Journal Article %A M. V. Yashina %A A. G. Tatashev %T A Two-Contour System with Two Clusters %J Russian journal of nonlinear dynamics %D 2021 %P 221-242 %V 17 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2021_17_2_a6/ %G en %F ND_2021_17_2_a6