@book { TuningvonORACLEDatenbanken,
    title = "Tuning von ORACLE-Datenbanken",
    author = "Axel {Schlüter} and Michael {Bethke}",
    year = "1997",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/216482"
}