@article{DAN_1991_319_5_a21,
     author = {Yu. V. Obnosov},
     title = {Solution of a problem of {Markushevich} in a class of doubly},
     journal = {Doklady Akademii Nauk},
     pages = {1125--1127},
     publisher = {mathdoc},
     volume = {319},
     number = {5},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_319_5_a21/}
}