@article{Hoare61a,
  title = "{Algorithm 63, Partition; Algorithm 64, Quicksort; Algorithm 65, Find}",
  author = "C.A.R. Hoare",
  year = "1961",
  journal = "Communications of the ACM",
  month = "July",
  number = "7",
  pages = "321--322",
  volume = "4",
}