@article{DAN_1962_147_2_a2,
     author = {I. Ts. Gokhberg and M. G. Krein},
     title = {On the problem of factoring operators in a {Hilbert} space},
     journal = {Doklady Akademii Nauk},
     pages = {279--282},
     publisher = {mathdoc},
     volume = {147},
     number = {2},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_147_2_a2/}
}