HARALAMPIEFF, K. Jelavich, Charles: Bulgarian „Incunabula". Südost-Forschungen, [S. l.], v. 1, n. 1, p. 483–484, 2021. Disponível em: https://www.suedost-forschungen.de/portal/index.php/sof/article/view/13071. Acesso em: 3 mai. 2024.