@inbook {Billen 1981,
	title = {Leuvense Gidsenbond leidt zondag rond bij Kartuizers en Kapucijnen},
	booktitle = {Het Nieuwsblad. Streeknieuws},
	year = {1981},
	pages = {4-5  juli},
	keywords = {Leuven O.Cart. (archaeologia), Leuven O.Cart. (historiographia)},
	attachments = {http://cartusiana.org/sites/default/files/Billen_Leuvense\%20Gidsenbond\%20leidt\%20ron\%20bij\%20Kartuizers.pdf},
	author = {Billen, Raymond}
}
