Rintelen, Wolfgang von. „Barker, John W.: Manuel II Palaeologus (1391—1425): A Study in Late Byzantine Statesmanship“. Südost-Forschungen 1, no. 1 (November 30, 2021): 534–536. Zugegriffen Mai 19, 2024. https://www.suedost-forschungen.de/portal/index.php/sof/article/view/11495.