%0 Journal Article %A R. V. Gamkrelidze %T Sliding modes in optimal control theory %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1985 %P 180-193 %V 169 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1985_169_a9/ %G ru %F TM_1985_169_a9