@article{SM_2009_200_2_a2,
     author = {V. M. Kaplitskii},
     title = {Asymptotic behaviour of the discrete spectrum of a~quasi-periodic
},
     journal = {Sbornik. Mathematics},
     pages = {215--228},
     publisher = {mathdoc},
     volume = {200},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2009_200_2_a2/}
}