@book { Markenwerte,
    title = "Markenwerte",
    subtitle = "Markenbewertung, Markencontrolling und Bilanzierung von Marken",
    author = "Andrea {Müller}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832476571",
    url = "https://m.diplom.de/document/222931"
}