@book { EugenikinDeutschland,
    title = "Eugenik in Deutschland",
    author = "Sonja {Krenmayr}",
    year = "2004",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638310055",
    url = "https://m.hausarbeiten.de/document/29516"
}