TY - JOUR AU - B. M. Makarov TI - Characterization of universally regular operators and operators JO - Doklady Akademii Nauk PY - 1990 SP - 1069 EP - 1071 VL - 314 IS - 5 UR - http://geodesic.mathdoc.fr/item/DAN_1990_314_5_a10/ LA - ru ID - DAN_1990_314_5_a10 ER -