@article{MZM_2008_83_4_a2,
     author = {V. V. Grushin},
     title = {Asymptotic {Behavior} of the {Eigenvalues} of the {Schr\"odinger} {Operator} in {Thin} {Closed} {Tubes}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {503--519},
     publisher = {mathdoc},
     volume = {83},
     number = {4},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2008_83_4_a2/}
}