%0 Journal Article %A N. I. Botoshan %A V. A. Moskalenko %A A. M. Ursu %T Investigation of the electron-state densities in two-band super conductors with a nonmagnetic impurity %J Teoretičeskaâ i matematičeskaâ fizika %D 1972 %P 264-282 %V 12 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1972_12_2_a11/ %G ru %F TMF_1972_12_2_a11