%0 Journal Article %A I. A. Bogaevsky %T Interaction of the folded Whitney umbrella and swallowtail in slow--fast systems %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2012 %P 29-33 %V 278 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2012_278_a2/ %G ru %F TM_2012_278_a2