@article{DAN_1960_132_4_a11,
     author = {V. N. Funtakov},
     title = {On the expansion in eigenfunctions of a non-selfadjoint differential operator of arbitrary even order on the $[0,\infty)$ half-axis},
     journal = {Doklady Akademii Nauk},
     pages = {777--780},
     publisher = {mathdoc},
     volume = {132},
     number = {4},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_132_4_a11/}
}