%0 Journal Article
%A Hass, Joel
%A Lagarias, Jeffrey
%T The number of Reidemeister moves needed for unknotting
%J Journal of the American Mathematical Society
%D 2001
%P 399-428
%V 14
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-01-00358-7/
%R 10.1090/S0894-0347-01-00358-7
%F 10_1090_S0894_0347_01_00358_7