%0 Journal Article %A L. E. Sadovskii %T On the structural definability of a locally nilpotent torsion-free group %J Doklady Akademii Nauk %D 1964 %P 1283-1286 %V 154 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_154_6_a10/ %G ru %F DAN_1964_154_6_a10