@book {2011,
	title = {Gerardus Magnus, Opera omnia II, 1. Sermo ad clerum Traiectensem de focaristis. Opera minora contra focaristas},
	series = {Corpus Christianorum Continuatio Mediaevalis},
	volume = {235},
	year = {2011},
	pages = {653},
	publisher = {Brepols},
	organization = {Brepols},
	address = {Turnhout},
	keywords = {Tekstuitgave},
	isbn = {978-2-503-53346-9},
	author = {Hofman, Rijcklof}
}
