@article{SM_1982_41_1_a6,
     author = {M. M. Skriganov},
     title = {Finiteness of the number of lacunae in the spectrum of the multidimensional polyharmonic operator with a~periodic potential},
     journal = {Sbornik. Mathematics},
     pages = {115--125},
     publisher = {mathdoc},
     volume = {41},
     number = {1},
     year = {1982},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1982_41_1_a6/}
}