@article{DAN_1990_314_5_a10,
     author = {B. M. Makarov},
     title = {Characterization of universally regular operators and operators},
     journal = {Doklady Akademii Nauk},
     pages = {1069--1071},
     publisher = {mathdoc},
     volume = {314},
     number = {5},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_314_5_a10/}
}