@article{DAN_1964_157_5_a1,
     author = {\`E. M. Dzhabrailova},
     title = {On the spectrum of a singular non-selfadjoint second-order differential equation with respect to a complex weight function},
     journal = {Doklady Akademii Nauk},
     pages = {1021--1023},
     publisher = {mathdoc},
     volume = {157},
     number = {5},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_157_5_a1/}
}