@book { Frauenarmut,
    title = "Frauenarmut",
    subtitle = "Hintergründe, Facetten, Perspektiven",
    author = "Karin {Heitzmann} and Angelika {Schmidt}",
    year = "2002",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093105"
}