@techreport{OperationSemanticsCSP,
  title = "An Operational Semantics for {CSP}",
  author = "A. W. Roscoe and S. D. Brookes and D. J. Walker",
  year = "1986",
  institution = "{Oxford University Computing Laboratory}",
  url = "http://www.cs.ox.ac.uk/people/bill.roscoe/publications/26.ps",
}