JELAVICH, C. Russia and Bulgaria, 1879: The letters of A. P. Davydov to N. K. Giers. Südost-Forschungen, [S. l.], v. 1, n. 1, p. 427–458, 2021. Disponível em: https://www.suedost-forschungen.de/portal/index.php/sof/article/view/13279. Acesso em: 4 mai. 2024.