%0 Journal Article %A T. A. Mel'nik %A S. A. Nazarov %T Asymptotic structure of the spectrum in a problem on harmonic %J Doklady Akademii Nauk %D 1993 %P 13-15 %V 333 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1993_333_1_a3/ %G ru %F DAN_1993_333_1_a3