@book { PaulTillichundderCouncilforaDemocraticGermany1933bis1945,
    title = "Paul Tillich und der Council for a Democratic Germany (1933 bis 1945)",
    author = "Petra {Liebner}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091352"
}