@INCOLLECTION\{IMM2002-01457,
    author       = "D. Bj{\o}rner",
    title        = "Towards Design Calculi for Requirements Engineering and Software Design",
    year         = "2002",
    month        = "aug",
    booktitle    = "Essays and Papers in Memory of Professor Ole-Johan Dahl",
    volume       = "",
    number       = "",
    series       = "",
    publisher    = "Springer-Verlag",
    address      = "Heidelberg, Germany",
    edition      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1457-full.html"
}