@article{DE_1984_20_8_a25,
     author = {Kh. M. Kogan and L. A. Sakhnovich},
     title = {Asymptotic behavior of the spectrum of a singular integro-differential operator},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1444--1447},
     publisher = {mathdoc},
     volume = {20},
     number = {8},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1984_20_8_a25/}
}