@article{DE_2005_41_5_a4,
     author = {V. M. Kurbanov},
     title = {On the {Eigenvalue} {Distribution} and a {Bessel} {Property} {Criterion} for {Root} {Functions} of a {Differential} {Operator:} {II}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {623--631},
     publisher = {mathdoc},
     volume = {41},
     number = {5},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2005_41_5_a4/}
}