@article{DAN_1974_219_5_a10,
     author = {O. A. Liskovets},
     title = {On the solution of ill-posed problems with a closable operator},
     journal = {Doklady Akademii Nauk},
     pages = {1069--1071},
     publisher = {mathdoc},
     volume = {219},
     number = {5},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_219_5_a10/}
}