TY - JOUR AU - T. V. Radoslavova TI - Local properties of functions and approximation by trigonometric polynomials JO - Matematičeskie zametki PY - 1975 SP - 527 EP - 539 VL - 18 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1975_18_4_a5/ LA - ru ID - MZM_1975_18_4_a5 ER -