@article{DAN_1974_218_2_a8,
     author = {V. A. Mikhailets},
     title = {The solvability and completeness of the system of eigenfunctions and associated functions of nonselfadjoint boundary-value problems for a {Sturm{\textendash}Liouville} operator equation},
     journal = {Doklady Akademii Nauk},
     pages = {284--286},
     year = {1974},
     volume = {218},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_218_2_a8/}
}