Catalogue entry by Consuelo Dutschke in the Digital Scriptorium: http://ds.lib.berkeley.edu/WesternMS097_20
Susan Boynton and Vasare Rastonis, "Twenty-first century conservation and study of a thirteenth-century gradual," in Care and conservation of manuscripts 16, Proceedings of the sixteenth international seminar held at the University of Copenhagen 13th–15th April 2016, ed. M.J. Driscoll (Museum Tusculanum Press · 2018), 345-59