Antoche, Emanuel. “The Campaigns of Nicopolis (1396) and Varna (1444): A Comparison (II)”. The Annals of "Dunarea de Jos" University of Galati. Fascicle XIX: History 4 (October 31, 2005): 91-113. Accessed January 15, 2025. https://gup.ugal.ro/ugaljournals/index.php/history/article/view/898.