@book {2008,
	title = {Das Papsttum am Vorabend des Investiturstreits. Stephan IX.  (1057-1058), Benedikt X. (1058) und Nikolaus II. (1058-1061)},
	series = {P{\"a}pste und Papsttum},
	volume = {36},
	year = {2008},
	pages = {247},
	publisher = {Anton Hierseman},
	organization = {Anton Hierseman},
	address = {Stuttgart},
	isbn = {978-3-7772-0801-5},
	author = {H{\"a}germann, Dieter}
}
@book {2008,
	title = {Das Papsttum am Vorabend des Investiturstreits. Stephan IX. (1057-1058), Benedict X. (1058) und Nikolaus II. (1058-1061)},
	series = {P{\"a}pste und Papsttum},
	volume = {36},
	year = {2008},
	pages = {247},
	publisher = {Anton Hiersemann},
	organization = {Anton Hiersemann},
	address = {Stuttgart},
	isbn = {978-3-7772-0801-5},
	author = {H{\"a}germann, Dieter}
}
@inbook {1991,
	title = {Grundherrschaft und st{\"a}dtischer Besitz in urbarialen Quellen des 9. Jahrhunderts (Saint-Maur-des-Foss{\'e}s, Saint-R{\'e}mi de Reims und Saint-Amand-les-Eaux)},
	booktitle = {Villes et campagnes au Moyen {\^A}ge. M{\'e}langes Georges Despy},
	year = {1991},
	pages = {355-365},
	publisher = {Editions du Perron},
	organization = {Editions du Perron},
	address = {Li{\`e}ge},
	issn = {2-87114-064-2},
	author = {H{\"a}germann, Dieter},
	editor = {Duvosquel, Jean-Marie and Alain Dierkens}
}
