@article{WuHuang2001a,
  author    = {{Wu, Jia Bang and Huang, Guo Lin}},
  title     = {{Family of consecutive integer pairs of the same height in the Collatz conjecture}},
  journal   = {{Mathematica Applicata (Wuhan)}},
  year      = {{2001}},
  volume    = {{14}},
  pages     = {{21--25}},
  note      = {{MR 1885838, Zbl 1002.11023}},
}