Information on differentia
In the original Cantus index, differentiae were identified by a two-digit system with a letter indicating the final pitch of each differentia and a number to distinguish between differentiae in the same mode with the same last note. Differentiae that only vary in terms of repeated notes, liquescents, or neumation were distinguished by a lower-case letter in the "Extra" field.
Mitchell, Andrew. Inventory of München, Franziskanerkloster St. Anna - Bibliothek, 12o Cmm 1. In: Cantus Manuscript 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.