TY - JOUR AU - S. A. Telyakovskii TI - On the works of S.\,B.~Stechkin on approximation of periodic functions by polynomials JO - Fundamentalʹnaâ i prikladnaâ matematika PY - 1997 SP - 1059 EP - 1068 VL - 3 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FPM_1997_3_4_a9/ LA - ru ID - FPM_1997_3_4_a9 ER -