@ARTICLE\{IMM1985-04381,
    author       = "H. Madsen and H. Spliid and P. Thyregod",
    title        = "Markov models in discrete and continous time for hourly observations of cloud cover",
    year         = "1985",
    journal      = "J. of climate and applied climatology",
    volume       = "",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/4381-full.html"
}