%0 Journal Article %A A. A. Kotel'nikova %T On the gaps in the spectrum of an elliptic operator on a~periodic grid %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2004 %P 963-965 %V 59 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_2004_59_5_a10/ %G en %F RM_2004_59_5_a10