Notes: Catalogus: "Forte Angelus Ubaldus, Perusinus, Baldi Frater, Jureconsultus. Fuerunt et eodem tempore, alii JCti Angelus de Periglis, Angelus Gambilionibus Aretinus [who was specialised in Canon Law, though], et Angelus de Amelia"; Dolezalek acknowledge the work to Angelus de Ubaldis (no further specification).
