%0 Journal Article %A V. V. Filippov %T Linkage of Cycles and Boundary Value Problems for Ordinary Differential Equations %J Differencialʹnye uravneniâ %D 2001 %P 375-383 %V 37 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2001_37_3_a7/ %G ru %F DE_2001_37_3_a7