@MISC\{IMM1979-03782,
    author       = "V. V. Vidal and J. Lyngvig",
    title        = "En introduktion til offentlig planl{\ae}gning",
    year         = "1979",
    pages        = "220",
    publisher    = "{IMSOR,} {DTH}",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/3782-full.html"
}