@book { DirecttoConsumerMarketing,
    title = "Direct-to-Consumer-Marketing",
    subtitle = "Entwicklungsstand und Chancen auf dem deutschen Pharmamarkt",
    author = "Jörg {Simon}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/224725"
}