%0 Journal Article %A V. V. Arestov %T Some extremal problems for differentiable functions of one variable %J Informatics and Automation %D 1975 %P 3-28 %V 138 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1975_138_a0/ %G ru %F TRSPY_1975_138_a0