@misc{Lagarias2012,
  author    = {{Jeffrey C. Lagarias}},
  title     = {{The 3x+1 Problem: An Annotated Bibliography, II (2000-2009)}},
  year      = {{2012}},
  url       = {{https://arxiv.org/abs/math/0608208}},
  eprint    = {{math/0608208}},
  archiveprefix= {{arXiv}},
  primaryclass= {{math.NT}},
}