%0 Journal Article %A V. A. Geiler %A V. A. Margulis %A I. I. Chuchaev %T On lacunae in the spectrum of the three-dimensional periodic Schr\"odinger operator with a~magnetic field %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1995 %P 198-199 %V 50 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1995_50_1_a6/ %G en %F RM_1995_50_1_a6