V-CVbav-ms-Capp.Sist.15: 'In nat[ivitate] ap[osto]lor[um] hymnis' / Vos secli iusti: After 'Tenor': 'Contra a faulx bordon'; [US-U, Renaissance Archives, VatS 15]: 'Fols 53v-54r have two versions of vs. 2, but both are attributed to Dufay in concordant sources' / Deo patri (v. 6): Verses attributed with certainty to Dufay
