%0 Journal Article
%A Schommer-Pries, Christopher J
%T Central extensions of smooth 2–groups and a finite-dimensional string 2–group
%J Geometry & topology
%D 2011
%P 609-676
%V 15
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.2140/gt.2011.15.609/
%R 10.2140/gt.2011.15.609
%F GT_2011_15_2_a0