@article{10_4171_ggd_319,
     author = {Gabi Ben-Simon and Tobias Hartnick},
     title = {Quasi-total actions and translation numbers},
     journal = {Groups, geometry, and dynamics},
     pages = {479--530},
     year = {2015},
     volume = {9},
     number = {2},
     doi = {10.4171/ggd/319},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/319/}
}