@article{MZM_2001_69_2_a10,
     author = {A. M. Savchuk},
     title = {On the {Eigenvalues} and {Eigenfunctions} of the {Sturm{\textendash}Liouville} {Operator} with a {Singular} {Potential}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {277--285},
     year = {2001},
     volume = {69},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_69_2_a10/}
}