@book { ClemensvonAlexandrien,
    title = "Clemens von Alexandrien",
    subtitle = "Sein Leben, Werk und philosophisch-theologisches Denken",
    author = "Rüdiger {Feulner}",
    year = "2006",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101186"
}