@TECHREPORT\{IMM1995-0344,
    author       = "S. Dahlerup and S. K. Jacobsen and H. Juel",
    title        = "Three {ADD} procedures for location in the plane",
    year         = "1995",
    number       = "",
    series       = "IMM-REP-1995-13",
    institution  = "Institute of Mathematical Modelling, Technical University of Denmark",
    address      = "",
    type         = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/344-full.html"
}