@article{Silva1999,
  author    = {{Tomás Oliveira e Silva}},
  title     = {{Maximum Excursion and Stopping Time Record-Holders for the $3x+1$ Problem: Computational Results}},
  journal   = {{Math. Comp.}},
  year      = {{1999}},
  volume    = {{68}},
  number    = {{1}},
  pages     = {{371-384}},
  note      = {{MR 2000g:11015}},
}