@CONFERENCE\{IMM2002-01734,
    author       = "T. S. Nielsen and H. Madsen",
    title        = "Control of Supply Temperature in District Heating Systems",
    year         = "2002",
    booktitle    = "Proceedings of the 8th International Symposium on District heating and Cooling",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "",
    organization = "",
    address      = "Trondheim, Norway",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1734-full.html"
}