In the original Cantus index for this manuscript, differentiae were identified by their last note and an arbitrarily-assigned number to distinguish between differentiae of the same mode that shared a common last note.
Helsen, Kate. Inventory of Wolfenbüttel, Herzog August Bibliothek - Musikabteilung, 28 Helmst. (olim D-W 31). Edited by Debra Lacoste. In: Cantus: A Database for Latin Ecclesiastical Chant: Inventories of Chant Sources. Directed by Debra Lacoste (2011-), Terence Bailey (1997-2010), and Ruth Steiner (1987-1996). Web developer, Jan Kolácek (2011-).
Differentiae indexed in consultation with a microfilm facsimile of the manuscript.
Standardized manuscript tonary completed by Rebecca Shaw (Dalhousie University) on March 11, 2018. Edited by Jennifer Bain, Sister Ilaria Culshaw, Andrea Klassen, and Brayden Olson and (Dalhousie University) on August 8, 2019 and Rebecca Shaw on August 11, 2019.