1. Abadie, A., & Gardeazabal, J. (2003). The economic costs of conflict. A case study of the Basque community. Retrieved July 10, 2019, from https://hks.Havad.edu/fs/aabadies/eccp.pdf.
2. Abdou, D. M. S., & Adawy, N. S. E. (2018). BRICS challenges: Economic position, tourism and environmental impacts. International Journal of Environmental Monitoring and Protection, 5(3), 64–72.
3. Adeloye, D., & Carr, N. (2019). Terrorism and tourism recovery cases. A study of Tunisia and Egypt. In M. Mkono (Ed.), Positive tourism in Africa. London: Routledge, Taylor and Francis Group.
4. AfDB. (2016). African Development Bank. Africa. Tourism monitor: Sustainable tourism through innovation, entrepreneurship and technology.
5. Alen, E., Losada, N., & Dominguez, T. (2015). The impact of ageing on the tourism industry: An approach to the senior tourist profile. Social Indicators Research, 127, 303–322.