The unknown epistolary heritage of professor Petar Dinekov in the Sofia Branch of the Central State Archives of Bulgaria: a contribution to our cultural history. Research Announcements "Heritage BG", [S. l.], n. 3, p. 54–59, 2025. DOI: 10.58894/AR-HBg.2022.3.54-59. Disponível em: https://periodicals.uni-sofia.bg/index.php/AR-NBg/article/view/1361. Acesso em: 10 mar. 2026.