@article{NANO_2012_3_4_a0,
     author = {A. A. Boitsev and I. Yu. Popov and O. V. Sokolov},
     title = {Hamiltonian with zero-range potentials having infinite number of eigenvalues},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {9--19},
     publisher = {mathdoc},
     volume = {3},
     number = {4},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/NANO_2012_3_4_a0/}
}