Wellness cluster and knowledge-based economy. Research Announcements "Heritage BG", [S. l.], n. 6, p. 78–85, 2025. DOI: 10.58894/AR-HBg.2024.6.78-85. Disponível em: https://periodicals.uni-sofia.bg/index.php/AR-NBg/article/view/1316. Acesso em: 10 mar. 2026.