@book { ZigeuneroderSintiundRoma,
    title = "Zigeuner oder Sinti und Roma?",
    author = "Hannah {Illgner}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656004837",
    url = "https://www.hausarbeiten.de/document/178203"
}