@article{IM_1985__80_143221,
     author = {M.M. Skriganov},
     title = {The spectrum band structure of the three-dimensional {Schr\"odinger} operator with periodic potential.},
     journal = {Inventiones mathematicae},
     pages = {107--122},
     publisher = {mathdoc},
     volume = {80},
     year = {1985},
     zbl = {0578.47003},
     url = {http://geodesic.mathdoc.fr/item/IM_1985__80_143221/}
}