%0 Journal Article %A I. M. Burkin %T On the existence of limit cycles of the second kind of multidimensional phase synchronization systems %J Differencialʹnye uravneniâ %D 1991 %P 2044-2049 %V 27 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_12_a2/ %G ru %F DE_1991_27_12_a2