Referenced in:

• st: 59 - Cambridge, Corpus Christi College, 190, pp. iii-xii, 1-294 48 [Atto of Vercelli]
• st: 112 - Cambridge, Corpus Christi College, 430 [Ambrosius Autpertus]
• st: 321 - London, British Library, Cotton Cleopatra A. vi, fols. 2-53 214 [the fragment of Paulus Diaconus, Expositio Artis Donati, on fol. 49]
• st: 423.9 - London, British Library, Harley 652, fols. 1*-4* 10