%0 Journal Article
%A Gunnar Carlsson
%T Introduction
%J Homology, homotopy, and applications
%D 2001
%P 6-6
%V 3
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/HHA_2001_3_2_a3/
%G en
%F HHA_2001_3_2_a3