Abdinejad, G., D. Nateghi, 2010. Deserts and combating desertification in Iran, Tehran, publishing Pune.
Adenike, A. A., O.B. Titus, 2009. Determinants of willingness to pay for improved water supply in Osogbo Metropolis; Osun State, Nigeria. Research Journal of Social Sciences, 4; 1-6.
Amirnejad, H., 2007. Estimating the Preservation Value of Golestan National Park of Iran by Using Individual’s Willingness to Pay. Agricultural and Economic Journal, 1(3); 175-188.
Amirnejad, H., S. Khalilian, M.H. Assareh, 2005. Protective and recreational value Sisangan Forest Park of Noshahr using willingness to pay. Tarbiat Modarres University, research and development, 72; 24-15.
Ciriacy–Wantrup, S.V., 1947. Capital Return from Soil Conservation Practices. Journal of Farm Economics, 29; 107-126.
Costanza, R., R. d’Arge, R.S. de Groot, S. Farber, M. Grasso, B. Hannon, K. Limburg, S. Naeem, R.V. O’Neill, J. Paruelo, R.G. Raskin, P. Sutton, M. van den Belt, 1997. The Value of the World’s Ecosystem Services and Natural Capital. Nature, 387; 253-260.
Davis, R.K., 1963. The Value of Outdoor Recreation: An Economic Problem. Natural Resource Journal, 3; 239-249.
Forest and degraded land reclamation projects with special emphasis on sensitive land to wind erosion and saline soils (RFLDL) 2015.
Ghorbani, M., 2015. Iranian pattern of participation and empowerment of local communities with social network approach (Case Study: Bezijan village, Mahhallat city, Markazi province). According to the national plan, Tehran University, the country's forests and rangelands and watershed management.
Ghorbani, M., S. Sadeghi, 2011. Introduction to Valuation Environment. University Press Ferdowsi Mashhad. No. 503.
Haneman, W.M., 1984. Welfare evaluation in contingent valuation experiments with discrete responses. American Journal of Agricultural Economics. 71(3); 332-341.
Howarth, B.R., S. Farber, 2002. Accounting for the value of ecosystem services. Ecological Economics. 41; 421-429.
International Carbon Sequestration Atlas Project, 1393. Office of the desert, Haraz publications.
Judge, G., C. Hill, W. Griffiths, T. Lee, H. Lutkepol, 1982. Intruduction to the theory and practice of econometrics. New York, Wiley and Sons co.
Khodaverdizadeh, M., B. Hayati, M. Kavoosi Kelashmi, 2008. Estimating the Outdoor Recreation Value of Kandovan Tourism Village of East Azarbayjan with the Use of Contingent Valuation Method. Environmental Sciences. 5(4); 43-52.
Khorshiddoust, A.M., 2005.Contingent Valuation in Estimating the Willingness to pay for Environmental Conservation in Tabriz,Iran. Environmental Studies 30; 12-21.
Lee, C., S. Han, 2002. Estimating the use and preservation values of national parks tourism resources using a contingent valuation method.Tourism Management 23; 531-540.
Lehtonen, E., J. Kuuluvainen, E. Pouta, M. Rekola, C. Li, 2003. Non-market benefits of forest conservation in southern Finland. Environmental science and policy. 6; 195-204.
Mesbahzadeh, T., 2007. Desertification assessment and mapping using IMDPA model based on land values in the region of Abu Zeid Abad (Kashan), Master Thesis, Department of Natural Resources, Tehran University.
Naji, M., M. Baniasadi, I. Saleh, H. Rafiee, 2011. The assessment of recreational value of Qaem forest park in Kerman using contingent valuation method. Iranian Journal of Forest. 3(3); 233-241.
Piri, M., M. Mosannan Mozafari, E. Javdan, 2009. Estimating the individual’s willingness to pay for forest existence value (Case study: Arasbaran forest). Journal of the forest and wood products (4); 357-343.
Sule, B.F., O.G. Okeola, 2010. Measuring willingness to pay for improved urban water supply in Offa City, Kwara State, Nigeria. Water Science & Technology: Water Supply-WSTWS, 10.6 2010.
Shrestha, R.K., T.V. Stein, J. Clark, 2007. Valuing Nature-Based Recreation in Public Natural Reads of the Apalachicola River Region, Florida. Journal of Environmental Management, 85; 977–985.
Salami, H., H. Rafiee, 2011. Estimation of Preservation Value of Anzali International Wetland Based on Deontological Pointview, Journal of Natural Environment, Iranian Journal of Natural Resources, Vol. 64, No.2, 2011, pp. 89-100
Venkatachalam, L., 2003. The contingent valuation method: a review. Environmental Impact Assessment Review. 24; 89-124.
Walsh, R. G., J. B. Loomis, R. A. Gillman, 1984. Valuing option, existence, and bequest demand for wilderness. Land Economic. 60 ;14-29.