@book { Thelocaldistributionoffillersinthezdirectionofpaper,
    title = "The local distribution of fillers in the z-direction of paper",
    subtitle = "Lokale Füllstoffverteilung in z-Richtung bei Papier",
    author = "Christian {Rompf}",
    year = "2010",
    publisher = "Diplom.de",
    address = "Hamburg, Germany",
    url = "https://m.diplom.de/document/227691"
}