%0 Journal Article %A D. V. Millionshchikov %A R. Jimenez %T Geometry of Central Extensions of Nilpotent Lie Algebras %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2019 %P 225-249 %V 305 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2019_305_a11/ %G ru %F TM_2019_305_a11