@inproceedings{Bird*99:Program,
  title = "Program Optimisation, Naturally",
  author = "Richard Bird and Jeremy Gibbons and Geraint Jones",
  year = "2000",
  booktitle = "Millenial Perspectives in Computer Science",
  editor = "J. W. Davies and A. W. Roscoe and J. C. P. Woodcock",
  publisher = "Palgrave",
  url = "http://www.cs.ox.ac.uk/people/jeremy.gibbons/publications/naturally.ps.gz",
}