%0 Journal Article %A V. G. Kurbatov %T On the invertibility of almost periodic operators %J Sbornik. Mathematics %D 1990 %P 367-377 %V 67 %N 2 %U http://geodesic.mathdoc.fr/item/SM_1990_67_2_a2/ %G en %F SM_1990_67_2_a2