@article{DE_1994_30_1_a5,
     author = {A. A. Malov},
     title = {Necessary conditions for the satisfaction of a {Hilbert-type} inequality in a system of root functions of a second-order ordinary differential operator},
     journal = {Differencialʹnye uravneni\^a},
     pages = {48--59},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1994_30_1_a5/}
}