1. Economic valuation of Mabamba Bay Wetland System of International Importance, Wakiso strict, Uganda;Akwetaireho,2009
2. An assessment of ecosystem services of Corbett Tiger Reserve, India;Badola;Environmentalist,2010
3. Contingent valuation of ecotourism in Annapurna conservation area, Nepal: implications for sustainable park finance and local development;Baral;Ecol. Econ.,2008
4. Barbier, E.B., Acreman, N., Knowler, D.,1997. Economic Valuation of Wetlands: A Guide for Policy Makers and Planners. Ramsar Convention Bureau, Gland, Switzerland.
5. Nepal Biodiversity Resource Book: Protected Area, Ramsar Sites and World Heritage Sites;Bhuju,2007