The negotiations and treaties between Justinian and Chosroes are copiously explained by Procopius, (Persie, l. ii. c. 10, 13, 26, 27, 28. Gothic. l. ii. c. 11, 15,) Agathias, (l. iv. p. 141, 142,) and Menander, (in Excerpt. Legat. p. 132 - 147.) Consult Barbeyrac, Hist. des Anciens Traites, tom. ii. p. 154, 181 - 184, 193 - 200.