%0 Journal Article %A Denne, Elizabeth %A Diao, Yuanan %A Sullivan, John M %T Quadrisecants give new lower bounds for the ropelength of a knot %J Geometry & topology %D 2006 %P 1-26 %V 10 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.2140/gt.2006.10.1/ %R 10.2140/gt.2006.10.1 %F GT_2006_10_1_a0