SAVOVA, A.; BERBEROVA, R. Ecological Tourism Opportunities in the Area of Ognyanovo Dam. Annual of Natural Sciences Department, [S. l.], v. 6, p. 1–6, 2021. DOI: 10.33919/ansd.20-21.6.1. Disponível em: https://ojs.nbu.bg/index.php/ANSD/article/view/540. Acesso em: 26 apr. 2024.