@Article{ 
  balhoetys,
  author = { Balogh, Zoltan and Hoefer-Isenegger, Regula and Tyson, Jeremy },
  title = { Lifts of Lipschitz maps and horizontal fractals in the Heisenberg group },
  journal = { Ergodic Theory and Dyn. Syst. },
  year = { 2006 },
  volume = { 26 },
  number = { 3 },
  pages = { 621-651 },
  URL = { http://cvgmt.sns.it/paper/867/ },
  note = { cvgmt preprint}
}