Canonical structural spine
The work's own structure
Reviewed edition: Decretum magistri Gratiani, Aemilius Friedberg, Leipzig 1879, Corpus Iuris Canonici I; MGH/BSB official navigation membership only. Division axes: . Structural nodes alone do not assert commentary citations.
Record-local commentary evidence
Commentary citations: work locus ↔ Dante locus
These citations occur in later commentary. They do not, by themselves, mean Dante cited this work.