@misc{Lagarias2011,
  author    = {{Jeffrey C. Lagarias}},
  title     = {{The 3x+1 problem: An annotated bibliography (1963--1999) (sorted by author)}},
  year      = {{2011}},
  url       = {{https://arxiv.org/abs/math/0309224}},
  eprint    = {{math/0309224}},
  archiveprefix= {{arXiv}},
  primaryclass= {{math.NT}},
}