@book { HerthaKrausZwischendenWelten,
    title = "Hertha Kraus – Zwischen den Welten",
    author = "Gerd {Schirrmacher}",
    year = "2002",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093438"
}