St. Gall Stiftsbibliothek 673

33 Causae

(1050 canons)

Burchard of Worms, Decretum (ca. 1010 A.D.)

12 Books  1783 Chapters

 

 Gratian I

101 Distinctiones

36 Causae

De penitentia (C.33 q.3)

(1860 canons)

Ivo of Chartres (?), Decretum (ca. 1095)

17 Books 3760 Chapters

Anselm of Lucca (ca. 1081)

13 Books ca. 864

 Gratian II

101 Distinctiones

36 Causae

De penitentia (C.33 q.3)

De consecratione

(3945 canons)

72 doublets

Köln, Erzbischöfliche Diözesan- und Dombibliothek 127, fol. 194v

Jean Gaudemet (1972), "Les doublets dans le Decrét Gratian," Atti del II Congresso internazionale della Societŕ italiana di storia del diritto, Venezia 1967  (Florence 1972; Reprinted in  La formation du droit canonique médiéval [Aldershot 1980]) 269-290)