@article{knu-72-babil,
  author = {D. E. Knuth},
  title = {Ancient {Babylonian} Algorithms},
  journal = {Communications of the ACM},
  volume = {15},
  number = {7},
  pages = {671--677},
  year = 1972,
  note = {Errata, ibid. 19(2):108, 1976},
  altkeys = {Knuth-75,knu-75-babil}
}