Note 144 — Chapter IV · ENTERPRISES OF THE POPES OF THE ELEVENTH CENTURY
Reading edition
Mabillon. Mus. Italic, v. 2. p. 114.—Fra. Pagi. Breviar. Pontif. Roman, vol. 2, p. 374.—Thomassin. Dicipl. vet. et nor. 1.2, c. lid, 116.—Muratori. de origine Cardinalatus. Ant Ital. v. 6. p. 156.