%0 Journal Article
%A V. V. Zhikov
%T On gaps in the spectrum of some divergence elliptic operators with periodic coefficients
%J Algebra i analiz
%D 2004
%P 34-58
%V 16
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_2004_16_5_a1/
%G ru
%F AA_2004_16_5_a1