@article{MZM_2021_110_3_a12,
     author = {M. M. Malamud and V. V. Marchenko},
     title = {Invariant {Schr\"odinger} {Operators} with {Point} {Interactions} at the {Vertices} of a {Regular} {Polyhedron}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {471--477},
     publisher = {mathdoc},
     volume = {110},
     number = {3},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2021_110_3_a12/}
}