%0 Journal Article %A M. I. Gomoyunov %A N. Yu. Lukoyanov %T Differential Games in Fractional-Order Systems: Inequalities for Directional Derivatives of the Value Functional %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2021 %P 74-94 %V 315 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2021_315_a5/ %G ru %F TM_2021_315_a5