@article{DAN_1994_335_6_a1,
     author = {N. F. Valeev and Ya. T. Sultanaev},
     title = {Asymptotic behavior of the solutions of a singular {Sturm--Liouville
}},
     journal = {Doklady Akademii Nauk},
     pages = {681--683},
     publisher = {mathdoc},
     volume = {335},
     number = {6},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1994_335_6_a1/}
}