TY - JOUR AU - A. A. Pekarskii TI - Direct and converse theorems of rational approximation in the spaces $L_p[-1,1]$ and $C[-1,1]$ JO - Doklady Akademii Nauk PY - 1987 SP - 1307 EP - 1310 VL - 293 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1987_293_6_a5/ LA - ru ID - DAN_1987_293_6_a5 ER -