@book { MarktorientierteKalkulation,
    title = "Marktorientierte Kalkulation",
    subtitle = "Möglichkeiten zur Preisanpassung in der Kalkulation",
    author = "Michael {Schneider}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832428525",
    url = "https://m.diplom.de/document/218579"
}