@inbook {Op de Coul 2015a,
	title = {Carthusians},
	booktitle = {Oxford Music Online.Grove Music Online},
	series = {Website},
	year = {2015},
	note = {Free article.
},
	pages = {March 12},
	publisher = {Oxford University Press},
	organization = {Oxford University Press},
	address = {Oxford},
	keywords = {liturgia, musica liturgica},
	attachments = {http://cartusiana.org./sites/default/files/Op\%20de\%20Coul_Carthusians-in-Oxford-Music-Online.pdf},
	author = {Op de Coul, Thomas}
}
