%0 Journal Article %A Yu. N. Kiselev %T Linear time-optimality problem and the unit sphere of initial values of a~conjugate variable %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1985 %P 179-182 %V 167 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1985_167_a8/ %G ru %F TM_1985_167_a8