YORDANOVA, Diyana. Encourage of Sustainable Business – Approaches for Increasing of the Scale and Impact Over Natural Tourism in Shumen Municipality. Vilnius University Proceedings, [S. l.], p. 66–73, 2025. DOI: 10.15388/Gronskis.2025.8. Disponível em: https://www.zurnalai.vu.lt/proceedings/article/view/42664. Acesso em: 27 jun. 2025.