(1)A criterion validity test of the contingent valuation method: comparing hypothetical and actual voting behavior for a public referendum
Vossler, Christian A.
Kerkvliet, Joe
Journal of Environmental Economics and Management.
URL: http://www.sciencedirect.com/science/article/B6WJ6-47YH607-2/2/e40ef929218a9f573e9f7343a764bc19