Caspers, C. M. A.  (2015).  The Spiritual Meaning of the Feasts of Trinity Sunday and Corpus Christi in the Low Countries. An Exploration with the Aid of libri ordinarii. In L.  van Tongeren & Caspers, C. M. A. (Red.), Unitas in pluralitate. Libri ordinarii als Quelle für die Kulturgeschichte. Libri ordinarii as a Source for Cultural History (pp. 357-380). Münster: Aschendorff.