@MISC\{IMM1996-01577,
    author       = "C. L. Hankin and H. Riis Nielson",
    title        = "Symposium on Models of Programming Languages  and Computation",
    year         = "1996",
    pages        = "293-294",
    publisher    = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1577-full.html"
}