GÜL, H.; ÖZER, M. Frequency domain causality analysis of tourism and economic activity in Turkey. European Journal of Tourism Research, [S. l.], v. 19, p. 86–97, 2018. DOI: 10.54055/ejtr.v19i.327. Disponível em: https://ejtr.vumk.eu/index.php/about/article/view/327. Acesso em: 14 oct. 2026.