@book { HoffenundzweifelnanderKirche,
    title = "Hoffen und zweifeln an der Kirche",
    author = "Friedhelm {Zubke}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-00801-2",
    url = "https://www.peterlang.com/document/1044465"
}