In the original Cantus index for this manuscript, the differentiae were identified based on the second tonary included in the manuscript I-VCd LXX (ff. 213v-222r).
Brusa, Gionata. I nventory of Vercelli, Biblioteca Capitolare, LXIV. 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-).
Standardized manuscript tonary completed by Rebecca Shaw (Dalhousie University) on December 11, 2017. Edited by Jennifer Bain, Sister Ilaria Culshaw, and Lucia Denk (Dalhousie University) on July 24, 2019 and Rebecca Shaw on August 7, 2019.