TY - JOUR AU - V. T. Martynyuk TI - Approximations by V. A. Steklov functions in Hausdorff metric JO - Matematičeskie zametki PY - 1969 SP - 21 EP - 30 VL - 5 IS - 1 UR - http://geodesic.mathdoc.fr/item/MZM_1969_5_1_a2/ LA - ru ID - MZM_1969_5_1_a2 ER -