%0 Journal Article
%A Christian Liedtke
%T Natural central extensions of groups
%J Groups, geometry, and dynamics
%D 2008
%P 245-261
%V 2
%N 2
%U http://geodesic.mathdoc.fr/articles/10.4171/ggd/38/
%R 10.4171/ggd/38
%F 10_4171_ggd_38