@book { ErziehungundBildungnachTIMSSundPISA,
    title = "Erziehung und Bildung nach TIMSS und PISA",
    author = "Bernd {Schwarz} and Thomas {Eckert}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1098067"
}