TY - JOUR AU - G. G. Magaril-Il'yaev TI - On best approximation by splines of function classes on the line JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1992 SP - 148 EP - 159 VL - 194 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1992_194_a9/ LA - ru ID - TM_1992_194_a9 ER -