TY - JOUR AU - A. Khatamov TI - Inverse theorems in the theory of rational approximations of functions of several variables JO - Matematičeskie zametki PY - 1993 SP - 132 EP - 144 VL - 54 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1993_54_2_a13/ LA - ru ID - MZM_1993_54_2_a13 ER -