1-Amirnejad, H, 2008, Natural resources and environmental economics, Jangle
Press, Tehran.
2 - Bruzelius, N, 1980, The value of travel time, London University.
3 - Backer, G, 1967, A theory of the allocation of time, Economic Journal,
No 75 .
4 - Brown, M, 2001, Macroeconomic theory, Stone Press University.
5- Dehganian, S, 2005, Environmental economics, Ferdowsi University Press.
6- Falihi, N, 2004, Economic valuation of environmental resources, case study
of Anzali parks, M.A Thesis Islamic Azad University, Tehran.
7 - Fleming, C, 2008, The recreation of value and application of demand
method, Tourism Management, No. 29.
8 - Hanley, N, 1996, Cost – Benefit analysis and the environment, Hants.
Edward Publishing Limited.
9- Henderson. J, R, Quandt, 1985, Microeconomic theory, McGraw - Hill
Press.
10- Karimzadegan, H, 1985, Environmental economics, Mehr Press .
11 - Mc kean, J. R. Revier. 1990, The extension of linear travel cost model,
Land Economic, No. 66.
12- Pajooyan, J, 2006, Public economics, Jangle Press, Tehran.
13- Pajooyan, J, 2008, Conference of public economics, IAU University,
Tehran.
14- Pajooyan, J. 1978, The effect of congestion on demand for outdoor
recreation, Ph.D. Thesis US Utah University.
15- Quant, J. 1990, Production theory and application, Journal of Economic,
No. 32
16 -Smith, V. 1983, The opportunity cost of travel time in recreation demand
model, Land Economic, No.59.
17- Willis, K. 2000, An individual travel cost method of evaluating forest
recreation, Journal of Agricultural Economic, No. 41.