TY - JOUR AU - G. D. Sadritdinova TI - Extremal control for modulus of derivative on class of $p$-symmetrical functions JO - Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika PY - 2007 SP - 54 EP - 57 IS - 1 UR - http://geodesic.mathdoc.fr/item/VTGU_2007_1_a7/ LA - ru ID - VTGU_2007_1_a7 ER -