@BOOK\{IMM1991-02264,
    author       = "J. Barzdin and D. Bj{\o}rner",
    title        = "Baltic Computer Science",
    year         = "1991",
    volume       = "",
    number       = "",
    series       = "Lecture notes in computer science 502",
    publisher    = "Springer",
    address      = "",
    edition      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/2264-full.html"
}