@article{VMUMM_2008_6_a13,
     author = {O. V. Gerasimova},
     title = {The spectrum of a commutator {Hamiltonian} is hydrogenlike},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {71--74},
     publisher = {mathdoc},
     number = {6},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2008_6_a13/}
}