@book{10985,
	author = {Langholm,},
	title = {Economics in the Medieval Schools :},
	publisher = {BRILL,},
	year = {1992.},
	series = {Studien und Texte zur Geistesgeschichte des Mittelalters ;},
	address = {Leiden; },
	url = {http://dx.doi.org/10.1163/9789004452428}
}