@unpublished{H2000:Kyoto,
  title = "Kyoto Prize acceptance speech and biographical notes",
  author = "C. A. R. Hoare",
  year = "2000",
  month = "jul",
  note = "Various drafts, including an 11-page long version. The eventual talk was quite different---took care to make favourable mention to all previous winners (Quine, McCarthy, Knuth, Wilkes, Popper).",
}