@book { BusinessInformatics,
    title = "Business Informatics",
    subtitle = "Cross-cultural differences between Germany and Australia",
    author = "Silke {Retzer}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832468200",
    url = "https://m.diplom.de/document/222168"
}