@article{Matthews1992,
  author    = {{Keith R. Matthews}},
  title     = {{Some Borel measures associated with the generalized Collatz mapping}},
  journal   = {{Colloq. Math.}},
  year      = {{1992}},
  volume    = {{53}},
  pages     = {{191--202}},
  note      = {{MR 93i:11090}},
}