TY - JOUR AU - M. D. Sterlin TI - Exact constants in inverse theorems in the theory of approximations JO - Doklady Akademii Nauk PY - 1972 SP - 545 EP - 547 VL - 202 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1972_202_3_a12/ LA - ru ID - DAN_1972_202_3_a12 ER -