%0 Journal Article %A G. I. Voitov %A M. R. Milkis %A V. M. Belikov %A T. V. Gevorkyan %T On the variations of radium in underground waters of Kopetdag seismic active region %J Doklady Akademii Nauk %D 1988 %P 585-589 %V 299 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1988_299_3_a16/ %G ru %F DAN_1988_299_3_a16