@article{BergelsonMisiurewiczSenti2006,
  author    = {{Vitaly Bergelson and Michal Misiurewicz and Samuel Senti}},
  title     = {{Affine Actions of a Free Semigroup on the Real Line}},
  journal   = {{Ergodic Theory and Dynamical Systems}},
  year      = {{2006}},
  volume    = {{26}},
  pages     = {{1285--1305}},
  note      = {{MR2266362 (2008f:37019)}},
}