@book { ReligionenMiteinanderoderGegeneinander,
    title = "Religionen – Miteinander oder Gegeneinander?",
    author = "Wilhelm {Guggenberger} and Petra {Steinmair-Pösel}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101619"
}