@article{10_4171_dm_294,
     author = {Will Turner and Vanessa Miemietz},
     title = {Hicas of length $\le 4$.},
     journal = {Documenta mathematica},
     pages = {177--205},
     year = {2010},
     volume = {15},
     doi = {10.4171/dm/294},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/294/}
}