@ARTICLE\{IMM1981-0269,
    author       = "H. Juel",
    title        = "Bounds in the location-allocation problem",
    year         = "1981",
    pages        = "277-282",
    journal      = "Journal of Regional Science",
    volume       = "21",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/269-full.html"
}