@book { TheologiealsTheiologie,
    title = "Theologie als Theiologie",
    subtitle = "Annäherungen an eine religiöse Theorie in christlicher Perspektive",
    author = "Wolfgang {Pfüller}",
    year = "1998",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1086435"
}