@book { InternationalekooperativeMarketingstrategien,
    title = "Internationale kooperative Marketingstrategien",
    author = "Simone {Biock}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832465223",
    url = "https://m.diplom.de/document/221701"
}