@article{MZM_2007_82_4_a15,
     author = {V. L. Chernyshev and A. I. Shafarevich},
     title = {Semiclassical {Spectrum} of the {Schr\"odinger} {Operator} on a {Geometric} {Graph}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {606--620},
     publisher = {mathdoc},
     volume = {82},
     number = {4},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2007_82_4_a15/}
}