TY - JOUR AU - V. A. Klyachin AU - D. V. Shurkaeva TI - Isoperimetry coefficient for simplex in the problem of approximation of~derivatives JO - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics PY - 2015 SP - 151 EP - 160 VL - 15 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ISU_2015_15_2_a3/ LA - ru ID - ISU_2015_15_2_a3 ER -