@article{AA_2005_17_1_a9,
     author = {M. M. Skriganov and A. V. Sobolev},
     title = {Asymptotic estimates for spectral, bands of periodic {Schr\"odenger} operators},
     journal = {Algebra i analiz},
     pages = {276--288},
     year = {2005},
     volume = {17},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2005_17_1_a9/}
}