@book { DogmatikI,
    title = "Dogmatik I",
    subtitle = "Ökumenischer Glaube - heute- Spiritus Sanktus non est skeptikus- Luther",
    author = "Helmut {Echternach}",
    year = "1983",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1072718"
}