@article{DAN_1965_160_3_a0,
     author = {Dzh. \`E. Allakhverdiev},
     title = {On the completeness of the system of eigenelements and adjoint elements of non-selfadjoint operators},
     journal = {Doklady Akademii Nauk},
     pages = {503--506},
     publisher = {mathdoc},
     volume = {160},
     number = {3},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_160_3_a0/}
}