@book { PostMergerIntegration,
    title = "Post-Merger Integration",
    subtitle = "Erfolgsfaktoren aus Sicht von Mitarbeitern und Experten",
    author = "Kerstin {Barnikel}",
    year = "2007",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/225213"
}