TY - JOUR AU - A. S. Fokht TI - Bounds for the derivatives of ultraspherical polynomials in the $L_p$, $1 JO - Differencialʹnye uravneniâ PY - 1979 SP - 717 EP - 724 VL - 15 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1979_15_4_a15/ LA - ru ID - DE_1979_15_4_a15 ER -