@book {Lieftinck1964,
	title = {Manuscrits dat{\'e}s conserv{\'e}s dans les Pays-Bas},
	year = {1964},
	publisher = {North-Holand Publishing Company},
	organization = {North-Holand Publishing Company},
	address = {Amsterdam},
	author = {Lieftinck, Gerard I.}
}
