A History of Rome to 565 A. D.
CHAPTER XXIV
Bury, _Later Roman Empire_, i, bk. iv, chs. i–x; Bussell, _Roman Empire_, i. bk. iii, ch. ii; _Cambridge Medieval History_, ii, chs. i, ii, iv, vi; Diehl, Ch., _Justinien et la civilization byzantine au 6 siècle_; Gelzer, _Abriss_, ii, _Das Zeitalter Justinians_; Gibbon, _Decline and Fall_, chs. xl–xliv; Holmes, W. G., _The Age of Justinian and Theodora_; Lavisse et Rombaud, _Histoire Generale_, see chap, xxiii; Niese, _Geschichte_, pp. 422 ff.