%0 Journal Article %A M. I. Zelikin %A V. F. Borisov %T Regimes with frequented switches in the problems of optimal control %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1991 %P 85-166 %V 197 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1991_197_a1/ %G ru %F TM_1991_197_a1