%0 Journal Article %A T. M. Grozovskii %T Bifurcations of ``apple'' and ``half-apple'' polycycles in generic two-parameter families %J Differencialʹnye uravneniâ %D 1996 %P 458-469 %V 32 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1996_32_4_a3/ %G ru %F DE_1996_32_4_a3