TY - JOUR AU - V. V. Andrievskii TI - On the approximation of functions by harmonic polynomials JO - Informatics and Automation PY - 1987 SP - 28 EP - 29 VL - 180 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a6/ LA - ru ID - TRSPY_1987_180_a6 ER -