%0 Journal Article %A B. M. Vul %A E. I. Zavaritskaya %A L. V. Keldysh %T Impurity conductivity of germanium at low temperatures %J Doklady Akademii Nauk %D 1960 %P 1361-1363 %V 135 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1960_135_6_a17/ %G ru %F DAN_1960_135_6_a17