@CONFERENCE\{IMM2004-03546, author = "H. A. Nielsen and H. Madsen and T. S. Nielsen", title = "Using quantile regression to extend an existing wind power forecasting system with probabilistic forecasts", year = "2004", month = "nov", booktitle = "Scientific Proceedings of the European Wind Energy Conference \& Exhibition", volume = "", series = "", editor = "", publisher = "", organization = "", address = "London", url = "http://www.ewea.org" }