@book { StrukturvernderndesMarketing,
    title = "Strukturveränderndes Marketing",
    author = "Henrik {Menge}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832483722",
    url = "https://m.diplom.de/document/223562"
}