@inproceedings{MetricSpaces,
  title = "Metric spaces as models for real-time concurrency",
  author = "A. W. Roscoe and G.M. Reed",
  year = "1988",
  booktitle = "{Proceedings of the Third Workshop on the Mathematical Foundations of Programming Language Semantics (New Orleans, 1987)}",
  editor = "Main et al",
  number = "298",
  pages = "331--343",
  publisher = "Springer",
  series = "LNCS",
  url = "http://www.cs.ox.ac.uk/people/bill.roscoe/publications/19.pdf",
}