Itskhok Fiselevitch Fikhman, "Polozheniye rabov v Vizantii VI v. - preimushchestvenno po dannym zakonodatelstva Iustiniana = The Situation of the Slaves in Byzantium in the 6th Century - Chiefly on the Data of the Legislation of Justinian", Ζ. V. Udaltsονa, "Vizantiiskii Vremennik", XXIV, 1964 : [recenzja] , The Journal of Juristic Papyrology, 1971, 16-17, , s. 206