@book { KulturkampfundVolksfrmmigkeit,
    title = "Kulturkampf und Volksfrömmigkeit",
    author = "Volker {Speth}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03052-5",
    url = "https://www.peterlang.com/document/1047518"
}