@book { DiekonstantinischeWende,
    title = "Die konstantinische Wende",
    author = "Patrick {Ziehm}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640266333",
    url = "https://www.hausarbeiten.de/document/121848"
}