TY - JOUR AU - E. P. Dolzhenko AU - E. A. Sevast'yanov TI - Approximation by rational functions in integral metrics and differentiability in the mean JO - Matematičeskie zametki PY - 1974 SP - 801 EP - 811 VL - 16 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1974_16_5_a14/ LA - ru ID - MZM_1974_16_5_a14 ER -