@article{hoare1961algorithm,
  author = {Hoare, C. A. R.},
  ee = {http://doi.acm.org/10.1145/366622.366644},
  interhash = {bd42d51836f956e2deebeb10b8e5f93a},
  intrahash = {1b58ff39c1c545c2be8114935d3c757d},
  journal = {Commun. ACM},
  number = 7,
  pages = 321,
  title = {Algorithm 64: Quicksort.},
  url = {http://dblp.uni-trier.de/db/journals/cacm/cacm4.html#Hoare61b},
  volume = 4,
  year = 1961
}

@article{williams1964algorithm,
  author = {Williams, J. W. J.},
  interhash = {88f7b4bad2300e0db2fab61c269e1f4e},
  intrahash = {f485e4ea9a877871b59ab503151a7f10},
  journal = {Communications of the ACM},
  number = 6,
  pages = {347–348},
  title = {Algorithm 232: Heapsort},
  volume = 7,
  year = 1964
}