TY - JOUR AU - A. A. Khromov TI - Approximation of Function and Its Derivative by the Modificated Steklov Operator JO - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics PY - 2014 SP - 595 EP - 599 VL - 14 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ISU_2014_14_4_a14/ LA - ru ID - ISU_2014_14_4_a14 ER -