@article{DE_2002_38_6_a2,
     author = {V. A. Vinokurov and V. A. Sadovnichii},
     title = {The {Asymptotics} of {Eigenvalues} and {Eigenfunctions} and a {Trace} {Formula} for a {Potential} with {Delta} {Functions}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {735--751},
     publisher = {mathdoc},
     volume = {38},
     number = {6},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_6_a2/}
}