@article{DAN_1987_294_2_a4,
     author = {G. V. Radzievskii},
     title = {Linear independence of the root vectors for operator-valued functions that are analytic outside a disk},
     journal = {Doklady Akademii Nauk},
     pages = {278--282},
     publisher = {mathdoc},
     volume = {294},
     number = {2},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_294_2_a4/}
}