@article{10_4171_ggd_6,
     author = {Danny Calegari},
     title = {Denominator bounds in {Thompson-like} groups and flows},
     journal = {Groups, geometry, and dynamics},
     pages = {101--109},
     year = {2007},
     volume = {1},
     number = {2},
     doi = {10.4171/ggd/6},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/6/}
}