%0 Journal Article %A V. I. Kuznetsov %A E. S. Ul'yanova %T The radiation-kinetic method for the estimation of ultrasmall quantities of polonium %J Doklady Akademii Nauk %D 1961 %P 869-872 %V 137 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_137_4_a29/ %G ru %F DAN_1961_137_4_a29