@article {2012,
	title = {Alexandre II de Walcourt, {\'e}v{\^e}que de Li{\`e}ge, 1164-1167. Serviteur m{\'e}connu de Fr{\'e}d{\'e}ric Barbarousse},
	journal = {Cahiers de civilisation m{\'e}di{\'e}vale},
	volume = {55},
	year = {2012},
	pages = {147-159},
	author = {Kupper, Jean-Louis}
}
