TSVETANSKA , Iskra; HADZHIEVA , Boryana; YANKOVA , Ivanka. THE BULGARIAN WRITTEN HERITAGE AS A CULTURAL RESOURCE AND A DRIVER OF SUSTAINABLE TOURISM. SCIENCE International Journal, [S. l.], v. 4, n. 3, p. 19–22, 2025. DOI: 10.35120/sciencej0403019t. Disponível em: http://scienceij.com/index.php/sij/article/view/182. Acesso em: 21 apr. 2026.