@article{10_4171_ggd_54,
     author = {Mikl\'os Ab\'ert and Yair Glasner},
     title = {Most actions on regular trees are almost free},
     journal = {Groups, geometry, and dynamics},
     pages = {199--213},
     year = {2009},
     volume = {3},
     number = {2},
     doi = {10.4171/ggd/54},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/54/}
}