%0 Journal Article %A I. I. Rokityansky %T Some estimates of electric conductivity and temperature of the upper mantle according to magnetic variation data %J Doklady Akademii Nauk %D 1971 %P 337-340 %V 198 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1971_198_2_a21/ %G ru %F DAN_1971_198_2_a21