@article{TMF_2010_164_2_a7,
     author = {T. A. Filatova and A. I. Shafarevich},
     title = {Semiclassical spectral series of {the~Schr\"odinger} operator with a~delta~potential on a~straight line and on a~sphere},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {279--298},
     publisher = {mathdoc},
     volume = {164},
     number = {2},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2010_164_2_a7/}
}