MLADJOV, Ian. Monarchs’ Names and Numbering in the Second Bulgarian State. Studia Ceranea, Poland, v. 5, p. 267–310, 2015. DOI: 10.18778/2084-140X.05.09. Disponível em: https://www.czasopisma.uni.lodz.pl/sceranea/article/view/5367. Acesso em: 20 oct. 2026.