Komasi, H., A. Nemati, S. Hashemkhani Zolfani, N. L. Williams, and R. Bazrafshan. “Investigating the Effects of COVID-19 on Tourism in the G7 Countries”. Technological and Economic Development of Economy, vol. 30, no. 4, June 2024, pp. 1064–1086, doi:10.3846/tede.2024.20821.