@book { SocialSoftwareimCustomerRelationshipManagementderchemischenIndustrie,
    title = "Social Software im Customer Relationship Management der chemischen Industrie",
    author = "André {Hahn}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836613675",
    url = "https://m.diplom.de/document/225820"
}