The civil wars, from the death of Bajazet to that of Mustapha, are related, according to the Turks, by Demetrius Cantemir (p. 58-82). Of the Greeks, Chalcondyles (l. iv. and v.), Phranza (l. i. c. 30-32), and Ducas (c. 18-27), the last is the most copious and best informed.