TY - JOUR AU - D. V. Gorbachev TI - Construction of the extremal function for a~functional on the class $H_\omega^{(n)}$ JO - Matematičeskie zametki PY - 1997 SP - 519 EP - 529 VL - 61 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1997_61_4_a3/ LA - ru ID - MZM_1997_61_4_a3 ER -