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Valuing camp-site characteristics : a generalized trael-cost model of demand for recreational camping
Brox, James A., (1996)
The necessity for substitute prices in recreation demand analyses
Rosenthal, Donald H., (1987)
Count data models and the problem of zeros in recreation demand analysis
Haab, Timothy C., (1996)
JEEM and non-market valuation : 1974 - 1998
Smith, V. Kerry, (2000)
Nonuse values in benefit cost analysis
Smith, V. Kerry, (1987)
Uncertainty, benefit-cost analysis, and the treatment of option value