@article {20058,
	title = {Medieval Letter-Collections as a Mirror of Circles of Friendship? The Example of Stephen of Tournai. 1128-1203},
	journal = {Belgisch Tijdschrift voor Filologie en Geschiedenis},
	volume = {83},
	year = {2005},
	pages = {285-300},
	author = {Ysebaert, Walter}
}
