@CONFERENCE\{IMM1981-02306,
    author       = "D. Bj{\o}rner",
    title        = "The {VDM} Principles of Software Specification and Program Design",
    year         = "1981",
    pages        = "44-74",
    booktitle    = "TC2 Work.Conf. on Formalisation of   Programming Concepts, Peniscola, Spain",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "Springer",
    organization = "",
    address      = "Lecture notes in computer science, vol. 107",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/2306-full.html"
}