@MISC\{IMM1999-0210,
    author       = "J. Larsen",
    title        = "Vehicle routing with time windows - finding optimal solutions efficiently",
    year         = "1999",
    month        = "aug",
    publisher    = "Dansk Selskab for Operationsanalyse",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/210-full.html",
    isbn_issn    = "1601-8893"
}