@BOOK\{IMM1991-02265,
    author       = "D. Bj{\o}rner and V. Kotov",
    title        = "Images of Programming: Dedicated to the Memory of Andrei P. Ershov",
    year         = "1991",
    volume       = "",
    number       = "",
    series       = "{IFIP} TC2",
    publisher    = "NH",
    address      = "",
    edition      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/2265-full.html"
}