Note 178 — Chapter V · - REFORM MOVEMENTS OF THE FOURTEENTH CENTURY AND THE COUNCIL OF CONSTANCE
Reading edition
F. Gregorovius, Hist. of the City of Rome in the Middle Ages (trans. A. Hamilton, 1894-1902), vol. vi, p. 606; J. N. Figgis, From Gerson to Grotius (1907), p. 35.