@article{DAN_1957_115_2_a8,
     author = {V. B. Lidskii},
     title = {On the completeness of a system of eigen elements and adjoint elements of a compacte operator},
     journal = {Doklady Akademii Nauk},
     pages = {234--236},
     publisher = {mathdoc},
     volume = {115},
     number = {2},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_115_2_a8/}
}