%0 Journal Article %A Will Turner %A Vanessa Miemietz %T Hicas of length $\le 4$. %J Documenta mathematica %D 2010 %P 177-205 %V 15 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/294/ %R 10.4171/dm/294 %F 10_4171_dm_294