@article{Mignosi1995,
  author    = {{Filippo Mignosi}},
  title     = {{On a Generalization of the $3x  +  1$ Problem}},
  journal   = {{J Number Theory}},
  year      = {{1995}},
  volume    = {{55}},
  pages     = {{28--45}},
  note      = {{MR 96m:11016}},
}