%0 Journal Article %A D. A. Kulikov %T Features of the problem on synchronization of two van der Pol--Duffing oscillators in the case of a direct connection and the presence of symmetry %J Itogi nauki i tehniki. Sovremennaâ matematika i eë priloženiâ. Tematičeskie obzory %D 2023 %P 49-60 %V 220 %I mathdoc %U http://geodesic.mathdoc.fr/item/INTO_2023_220_a6/ %G ru %F INTO_2023_220_a6