@ARTICLE\{IMM1981-0271,
    author       = "H. Juel and R. F. Love",
    title        = "On the dual of the linearly constrained multi-facility location problem with arbitrary norms",
    year         = "1981",
    pages        = "329-337",
    journal      = "Transportation Science",
    volume       = "15",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/271-full.html"
}