@inproceedings{Gibbons94:How,
  title = "How to Derive Tidy Drawings of Trees",
  author = "Jeremy Gibbons",
  year = "1994",
  address = "Department of Computer Science, University of Auckland",
  annote = "Condensed version of \cite{Gibbons93:Deriving}",
  booktitle = "Proceedings of Salodays in Auckland",
  editor = "C. Calude and M. J. J. Lennon and H. Maurer",
  note = "Also in Proceedings of First New Zealand Formal Program Development Colloquium, p.\,105--126.",
  pages = "53--73",
  url = "http://www.cs.ox.ac.uk/people/jeremy.gibbons/publications/nzfpdc-drawing.ps.gz",
}