@book{29665,
	author = {Wutke, Konrad and Verlag Ferdinand Hirt (Wrocław)},
	title = {Über schlesische Formelbücher des Mittelalters /},
	publisher = {Ferdinand Hirt,},
	year = {1919.},
	series = {Darstellungen und Quellen zur Schlesischen Geschichte ;},
	address = {Breslau :},
	url = {http://obc.opole.pl/publication/722}
}