%0 Journal Article %A Tuffley, Christopher %T Finite subset spaces of S1 %J Algebraic and Geometric Topology %D 2002 %P 1119-1145 %V 2 %N 2 %U http://geodesic.mathdoc.fr/articles/10.2140/agt.2002.2.1119/ %R 10.2140/agt.2002.2.1119 %F 10_2140_agt_2002_2_1119