6Davis, Robert K. "The Value of Big Game Hunting in aPrivate Forest," in Truncations of the 29th North American Wildlife and Natural Resources Conference(Washington ,D. C. , Wildlife Management Institute) [ D]. 1964.
7Mitchell RC, Carson RT. An Experiment in Measuring Willingness to Pay for Intrinsic Water Pollution Control Benefits [ R ]. US Environmental Protection Agency Report, 1981.
8Paulo A. L. D. Nunes, Jerorn C. J. M. , van den Bergh, Economic valuation of biodiversity: sense or nonsense? [ J ]. Ecological Economics. 2001, 39:203-222.
9Loomis J B, Kent P, Strange L, et al.. Measuring the total economic value of restoring ecosystem services in an impaired river basin:Results from a contingent valuation survey[ J]. Ecological Economics, 2000,33( 1 ) :103 -107.
10Thompson E, Berger M, Blomquist G, Allen S.. Valuing the arts : a contingent valuation approach [ J ]. Journal of Cuhural Economics, 2002, 26: 87-113.