@TECHREPORT\{IMM1994-02784,
    author       = "M. Rostgaard and M. Lauritsen and N. K. Poulsen",
    title        = "Prediction using the Delta Operator",
    year         = "1994",
    number       = "9",
    series       = "",
    institution  = "Department of Mathematical Modelling (IMM), The Technical University of Denmark",
    address      = "",
    type         = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/2784-full.html"
}