@CONFERENCE\{IMM2000-01003,
    author       = "H. Riis Nielson and F. Nielson",
    title        = "Shape analysis for Mobile Ambients",
    year         = "2000",
    pages        = "142-154",
    booktitle    = "Proc. {POPL'}00",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "{ACM} Press",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1003-full.html"
}