@article {Adolphus de Essen_VF 2004,
	title = {Adolf von Essen},
	journal = {Die deutsche Literatur des Mittelalters. Verfasserlexikon, 2e ed.},
	volume = {11},
	year = {2004},
	note = {Aanvulling op: <bib>Klinkhammer 1978</bib>.
},
	pages = {21},
	keywords = {Adolphus de Essendia O.Cart. (biographia), biographiae},
	author = {...}
}
