@inbook {Becker 2003,
	title = {Bruno von K{\"o}ln und die Liturgie der Kartause},
	booktitle = {Francis Timmermans \& Tom Gaens (eds.), Magister Bruno. Negen eeuwen uitstraling van de Kartuizerorde},
	year = {2003},
	pages = {1-7},
	address = {Leuven},
	keywords = {liturgia},
	author = {Becker, Hansjakob}
}
