@book {1994,
	title = {The Envy of Angels. Cathedral Schools and Social Ideals in Medieval Europe, 950-1200},
	series = {Middle Ages Series},
	year = {1994},
	pages = {525},
	publisher = {University of Pennsylvania Press},
	organization = {University of Pennsylvania Press},
	address = {Philadelphia},
	issn = {0-8122-3246-1},
	author = {Jaeger, C. Stephen}
}
