%0 Journal Article %A G. D. Sadritdinova %T Extremal control for modulus of derivative on class of $p$-symmetrical functions %J Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika %D 2007 %P 54-57 %N 1 %U http://geodesic.mathdoc.fr/item/VTGU_2007_1_a7/ %G ru %F VTGU_2007_1_a7