@article {Op de Coul 2014, title = {How were new saint{\textquoteright}s feasts added to liturgical manuscripts? Uniformity in three dated Carthusian graduals from the Low Countries}, journal = {{\'E}tudes gr{\'e}goriennes}, volume = {41}, year = {2014}, pages = {65-86}, keywords = {festa sanctorum, gradualia, hagiographia, liturgia, uniformitas scripturalis}, attachments = {http://cartusiana.org/sites/default/files/Op\%20de\%20Coul_New\%20saint\%27s\%20feasts_0.pdf}, author = {Op de Coul, Thomas} }