@article{LopezStoll2009,
  author    = {{López, Josefine and Stoll, Peter}},
  title     = {{The $3x+1$ conjugacy map over a Sturmian word}},
  journal   = {{Integers}},
  year      = {{2009}},
  volume    = {{9}},
  pages     = {{141--162}},
  note      = {{MR 2506145}},
}