TY - JOUR AU - V. V. Lipovik TI - On estimates of strong approximation of functions by Fourier--Čebyšev sums JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1987 SP - 149 EP - 151 VL - 180 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1987_180_a87/ LA - ru ID - TM_1987_180_a87 ER -