@book { GrowthundValueStrategieinDeutschland,
    title = "Growth- und Value-Strategie in Deutschland",
    author = "Ralf {Bachmann}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832459635",
    url = "https://m.diplom.de/document/221413"
}