@book { TendenzenderPolarisierungvonMarkeninHighEndundLowEnd,
    title = "Tendenzen der Polarisierung von Marken in High-End und Low-End",
    author = "Anna {Rückert}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832488246",
    url = "https://m.diplom.de/document/224004"
}