@book { MarktorientierteDisposition,
    title = "Marktorientierte Disposition",
    author = "Marcelo {Gomes-Barthelt}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836630146",
    url = "https://m.diplom.de/document/226822"
}