%0 Journal Article %A M. I. Klinger %T On spectral properties of mobility-gap states for negative U-electron pairs in amorphous %J Doklady Akademii Nauk %D 1984 %P 91-95 %V 279 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1984_279_1_a21/ %G ru %F DAN_1984_279_1_a21