@article{DAN_1984_279_1_a21,
     author = {M. I. Klinger},
     title = {On spectral properties of mobility-gap states for negative {U-electron} pairs in amorphous
},
     journal = {Doklady Akademii Nauk},
     pages = {91--95},
     publisher = {mathdoc},
     volume = {279},
     number = {1},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_279_1_a21/}
}