KULMAN, D. Bogdanov, Ivan: Bŭlgarskata kniga prež vekovete. Südost-Forschungen, [S. l.], v. 1, n. 1, p. 413–413, 2021. Disponível em: http://bsb0sit-zepweb01.bsb.lrz.de/portal/index.php/sof/article/view/10027. Acesso em: 28 aug. 2024.