@article{DAN_1964_159_5_a0,
     author = {D. \`E. Allakhverdiev},
     title = {On completeness of the system of eigenelements and adjoined elements of operators which are rational functions of a parameter},
     journal = {Doklady Akademii Nauk},
     pages = {951--954},
     publisher = {mathdoc},
     volume = {159},
     number = {5},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_159_5_a0/}
}