@book { ViralVideoMarketingmitBusinessGeneratedContent,
    title = "Viral Video Marketing mit Business Generated Content",
    author = "Larisa {Schmidt}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640989034",
    url = "https://www.hausarbeiten.de/document/177180"
}