@CONFERENCE\{IMM1987-02321,
    author       = "D. Bj{\o}rner",
    title        = "The Stepwise Development of Software Development Graphs: Meta-Programming {VDM} Developments",
    year         = "1987",
    pages        = "77-96",
    booktitle    = "VDM'87",
    volume       = "252",
    series       = "Lecture notes in computer science 252",
    editor       = "",
    publisher    = "SV",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/2321-full.html"
}