@CONFERENCE\{IMM1991-02326,
    author       = "D. Bj{\o}rner",
    title        = "Formal Software Development: Requirements for a {CASE}",
    year         = "1991",
    booktitle    = "European Symposium on Software Development Environment and {CASE} Technology",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "Springer",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/2326-full.html"
}