@book { VerschrfungderBildungsungleichheitinderCOVID19Pandemie,
    title = "Verschärfung der Bildungsungleichheit in der COVID-19-Pandemie?",
    author = "",
    year = "2021",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/1000532"
}