%0 Journal Article %A Berrick, A. %A Cohen, F. %A Wong, Y. %A Wu, J. %T Configurations, braids, and homotopy groups %J Journal of the American Mathematical Society %D 2006 %P 265-326 %V 19 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-05-00507-2/ %R 10.1090/S0894-0347-05-00507-2 %F 10_1090_S0894_0347_05_00507_2