Differentiae are written in the margins of the manuscript, with Roman numeral indications for the mode of each differentia. differentiae were not indexed in the original Cantus index. For the rationale of the transcription of adiastematic neumed differentiae into pitched notation, see Rebecca Shaw's thesis.
Czernin, Martin. Inventory of Linz, Oberösterreichische Landesbibliothek, 290 (olim 183; Gamma p.19). Edited by Keith Glaeske. 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-).
Catholic Church, and Martin Czernin. Linz, Upper Austrian State Library (olim Bundesstaatliche Studienbibliothek), codex 290 (183). Facsimile. Ottawa, Canada: Institute of Mediaeval Music, 2006.
Standardized manuscript tonary completed by Rebecca Shaw (Dalhousie University) on March 17, 2018. Edited by Jennifer Bain, Sister Ilaria Culshaw, Lucia Denk, Andrea Klassen, and Brayden Olson (Dalhousie University) on August 29, 2019.