@inbook {2022,
	title = {Een centraal vorstendom 1339-1423},
	booktitle = {Gelderland als zelfstandig graafschap en hertogdom},
	series = {Verhaal van Gelderland},
	number = {2},
	year = {2022},
	pages = {138-223},
	publisher = {Boom Uitgevers},
	organization = {Boom Uitgevers},
	address = {Amsterdam},
	isbn = {978-90-244-4252-2},
	author = {Bosch, Rudolf A.A. and Oosterman, Johan B.},
	editor = {Kan, Fred J. W. van and Noordzij, Aart and Thissen, Bert}
}
@inbook {2008,
	title = {Erwerbspolitik und G{\"u}terbesitz des Klosters Graefenthal im Mittelalter},
	booktitle = {Graefenthal. Ein Kloster der Zisterzienserinnen am Niederrhein},
	series = {Arbeitsheft der rheinischen Denkmalpflege},
	volume = {72},
	year = {2008},
	pages = {75-98},
	publisher = {Wernersche},
	organization = {Wernersche},
	address = {Worms},
	isbn = {978-3-88462-274-2},
	author = {Thissen, Bert},
	editor = {Dohmen, Kristin and Heckner, Ulrike}
}
