@book { DigitalRightsManagementsvsCreativeCommonsamBeispielvonACTA,
    title = "Digital Rights Managements vs. Creative Commons am Beispiel von ACTA",
    author = "Nadja {Topfstedt}",
    year = "2012",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656169499",
    url = "https://m.hausarbeiten.de/document/192092"
}