%0 Journal Article %A V. I. Kuznetsov %A P. D. Titov %T Coextraction of tungsten and some other elements %J Doklady Akademii Nauk %D 1960 %P 840-842 %V 131 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1960_131_4_a29/ %G ru %F DAN_1960_131_4_a29