@book { IdeeundWirklichkeitderOffenbarung,
    title = "Idee und Wirklichkeit der Offenbarung",
    author = "Erwin {Mann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1135402"
}