@book { KindheitinderDDR,
    title = "Kindheit in der DDR",
    author = "Dieter {Kirchhöfer} and Gerhart {Neuner} and Irmgard {Steiner} and Christa {Uhlig}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097195"
}