%0 Journal Article %A Tsv. Tsachev %T An Optimal Control Problem for the Heat Equation %J Mathematica balkanica %D 1989 %P 296 %V 3 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_1989_3_3-4_a6/ %F MABA_1989_3_3-4_a6