@book { GottesGeistimArmenviertel,
    title = "Gottes Geist im Armenviertel",
    author = "Monika {Bossung-Winkler}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1094019"
}