@MISC\{IMM1990-01534,
    author       = "F. Nielson",
    title        = "Theoretical Aspects of Semantics-Based  Language Implementation",
    year         = "1990",
    publisher    = "Aarhus University",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1534-full.html"
}