@book { BonhoefferReligionandPolitics,
    title = "Bonhoeffer, Religion and Politics",
    author = "Christiane {Tietz} and Jens {Zimmermann}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02060-1",
    url = "https://www.peterlang.com/document/1047406"
}