@article{BorovkovPfeifer2000,
  author    = {{Konstantin Borovkov and Dietmar Pfeifer}},
  title     = {{Estimates for the Syracuse problem via a probabilistic model}},
  journal   = {{Theory of Probability and its Applications}},
  year      = {{2000}},
  volume    = {{45}},
  number    = {{2}},
  pages     = {{300--310}},
  note      = {{MR 1 967 765}},
}