SARIA, B. Beševliev, V.: Les inscriptions du relief de Madara. Südost-Forschungen, [S. l.], v. 1, n. 1, p. 618–618, 2021. Disponível em: https://www.suedost-forschungen.de/portal/index.php/sof/article/view/13352. Acesso em: 5 mai. 2024.