@article{VanBendegem2005,
  author    = {{Jean Paul Van Bendegem}},
  title     = {{The Collatz Conjecture: A Case Study in Mathematical Problem Solving}},
  journal   = {{Logic and Logical Philosophy}},
  year      = {{2005}},
  volume    = {{14}},
  number    = {{1}},
  pages     = {{7--23}},
  note      = {{MR 2163301}},
}