%0 Journal Article %A A. Yu. Kolesov %A E. F. Mishchenko %T The Pontryagin delay phenomenon and stable ducktrajectories for multidimensional relaxation systems with one slow variable %J Sbornik. Mathematics %D 1991 %P 1-10 %V 70 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1991_70_1_a0/ %G en %F SM_1991_70_1_a0