@article{DAN_1963_149_2_a9,
     author = {V. \`E. Lyantse},
     title = {The eigenfunction expansion of a non-selfadjoint differential operator with spectral singularities},
     journal = {Doklady Akademii Nauk},
     pages = {256--259},
     publisher = {mathdoc},
     volume = {149},
     number = {2},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_149_2_a9/}
}