1. Abidin ZZ (1995) The identification of criteria and indicators for the sustainable management of ecotourism in Taman Negara National Park, Malaysia: A Delphi consensus. Ph.D. Dissertation. Forestry and Consumer Sciences. West Virginia University
2. Amir Ahmadi A, Mozaffari H (2012) Analysis of suitable place for ecotourism development in Zanjan Province using Geographic Information Systems. Q J Geogr Res 27(3):135–150
3. Andrea EG, Binford MW, Southworth J (2009) Tourism, forest conversion, and land transformations in the Angkor basin, Cambodia. Appl Geogr 29:212–223
4. Ashouri P, Faryadi Sh (2010) Potential assessment of nature-based tourism destinations using MCA techniques case study: Lavasan-e Koochak. J Environ Stud 36(55):1–12
5. Balli A, Monavari M, Riazi B, Khorasani N, KheirkhahZarkesh M (2015) A spatial decision support system for ecotourism development in caspian hyrcanian mixed forests ecoregion. Bol. Ciênc. Geod. sec. Artigos, Curitiba 21(2): 340–353