@ARTICLE\{IMM2006-04256,
    author       = "H. A. Nielsen and H. Madsen",
    title        = "Modelling the Heat Consumption in District Heating Systems using a Grey-box approach",
    year         = "2006",
    pages        = "63-71",
    journal      = "Energy \& Buildings",
    volume       = "38",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/4256-full.html"
}