@ARTICLE\{IMM1983-0275,
    author       = "H. Juel",
    title        = "Coincident optima for two-facility Weber problems",
    year         = "1983",
    pages        = "110-113",
    journal      = "Transportation Science",
    volume       = "17",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/275-full.html"
}