NESHEVA-KIOSSEVA, N. COVID 19 – The External Economic Shock: Changing the Business Models. Almatourism - Journal of Tourism, Culture and Territorial Development, [S. l.], v. 12, n. 23, p. 93–123, 2021. DOI: 10.6092/issn.2036-5195/13182. Disponível em: https://almatourism.unibo.it/article/view/13182. Acesso em: 12 aug. 2022.