Brindisi, Biblioteca Annibale de Leo A/1, fol. 1
Gratian, Decretum, D.1
of Gratian's Vulgate Text
Biberach an der Riss, Spitalarchiv B 3515 (Italian)
Bremen, Universitätsbibliothek a.142 (French)
Brindisi, Biblioteca Annibale de Leo A/1 (Italian)
Florence, Laurenziana, Santa Croce 1 sin. 1 (Italian)
Munich, Bayerische Staatsbibliothek lat. 28161(Italian)
Mainz, Stadtbibliothek II.204 (Italian)
Pennington, “Gratian and Compurgation,”
Bulletin of Medieval Canon Law 31 (2014) 253-256