@book{4581,
	author = {Asperen de Boer, J. R. J. van.},
	title = {Underdrawing in paintings of the Rogier van der Weyden and Master of Flémalle groups /},
	publisher = {Waanders},
	year = {1992},
	series = {Nederlands kunsthistorisch jaarboek ; dl. 41},
	address = {Zwolle :}
}