Michael Angold, The Cambridge History of the Byzantine Empire c.500–1492, Cambridge University Press, (ISBN978-1-108-88363-4, DOI10.1017/9781139055994.026, lire en ligne), « After The Fourth Crusade: The Greek Rump States and the Recovery of Byzantium », p. 731–758
Salah A. A. Sulayman, « The Rise Of The Byzantine Greek Kingdoms In 1204 - 1261 AD. And Its Impact On The Byzantine Empire », University of Benghazi, , p. 1 (DOI10.37376/1571-000-022-004, lire en ligne)
Michael Angold, The Cambridge History of the Byzantine Empire c.500–1492, Cambridge University Press, (ISBN978-1-108-88363-4, DOI10.1017/9781139055994.026, lire en ligne), « After The Fourth Crusade: The Greek Rump States and the Recovery of Byzantium », p. 731–758
Salah A. A. Sulayman, « The Rise Of The Byzantine Greek Kingdoms In 1204 - 1261 AD. And Its Impact On The Byzantine Empire », University of Benghazi, , p. 1 (DOI10.37376/1571-000-022-004, lire en ligne)