@TECHREPORT\{IMM1979-0364,
    author       = "H. Juel",
    title        = "The single source Weber problem - Survey and extensions: Comment",
    year         = "1979",
    number       = "",
    series       = "",
    institution  = "Virginia Polytechnic Institute and State University",
    address      = "",
    type         = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/364-full.html"
}