@book { MarkteintrittsstrategienfrdieEU,
    title = "Markteintrittsstrategien für die EU",
    author = "Barbara {Stauder}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832489120",
    url = "https://m.diplom.de/document/224087"
}