VACHAVIOLOS, D. Church Union and Balance of Powers in Late Byzantium: The Testimony of Georgios Sphrantzes. Byzantina Symmeikta, [S. l.], v. 31, p. 379–400, 2021. DOI: 10.12681/byzsym.23433. Disponível em: https://ejournals.epublishing.ekt.gr/index.php/bz/article/view/23433. Acesso em: 7 may. 2024.