@ARTICLE\{IMM1998-0327,
    author       = "J. Brimberg and H. Juel",
    title        = "A minisum model with forbidden regions for locating a semi-desirable facility in the plane",
    year         = "1998",
    pages        = "109-120",
    journal      = "Location Science",
    volume       = "6",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/327-full.html"
}