VELAORAS, K.; MENEGAKI, A.; POLYZOS, S.; KOTZAMANI, K. Exploring tourist willingness to pay for sustainability certifications in the hospitality industry: evidence from a sample in Athens. European Journal of Tourism Research, [S. l.], v. 41, p. 4103, 2025. DOI: 10.54055/ejtr.v41i.3897. Disponível em: https://ejtr.vumk.eu/index.php/about/article/view/3897. Acesso em: 24 oct. 2026.