%0 Journal Article %A Pierre Dehornoy %T Which geodesic flows are left-handed? %J Groups, geometry, and dynamics %D 2017 %P 1347-1376 %V 11 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4171/ggd/431/ %R 10.4171/ggd/431 %F 10_4171_ggd_431