%0 Journal Article %A F. S. Rofe-Beketov %T Constants of Kneser type and effective masses for zone potentials %J Doklady Akademii Nauk %D 1984 %P 356-359 %V 276 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1984_276_2_a23/ %G ru %F DAN_1984_276_2_a23