%0 Journal Article %A P. I. Chalov %A S. G. Samotsvetov %T New data on the mechanism of the natural fractionation of even uranium isotopes $(^{234}\mathrm{U}$, $^{238}\mathrm{U})$ %J Doklady Akademii Nauk %D 1990 %P 581-584 %V 313 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1990_313_3_a15/ %G ru %F DAN_1990_313_3_a15