@book {2019,
	title = {Papsturkunden in Niedersachsen und Bremen bis 1198},
	series = {Ver{\"o}ffentlichungen der Historischen Kommission f{\"u}r Niedersachsen und Bremen},
	volume = {306},
	year = {2019},
	pages = {348},
	publisher = {Wallstein Verlag},
	organization = {Wallstein Verlag},
	address = {G{\"o}ttingen},
	isbn = {978-3-8353-3581-3},
	author = {Dolle, Josef}
}
