@book { MergersAcquisitions,
    title = "Mergers & Acquisitions",
    author = "Raphael {König}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832471200",
    url = "https://m.diplom.de/document/222436"
}