@article{Li2002,
  author    = {{Li, Xiao Chun}},
  title     = {{Compressive Iteration for the $3N+1$ conjecture}},
  journal   = {{J. Huazhong Univ. of Science and Technology (Natural Science)}},
  year      = {{2002}},
  volume    = {{30}},
  number    = {{2}},
}