@book { DieGeltungderGrundrechteimkirchlichenBereich,
    title = "Die Geltung der Grundrechte im kirchlichen Bereich",
    author = "Gunter {Barwig}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097654"
}