Brox, James A.; Kumar, Ramesh C.; Stollery, Kenneth R. - In: American Journal of Agricultural Economics 85 (2003) 2, pp. 414-428
This article deals with the problem of item nonresponse in contingent valuation surveys using a payment-card method, by applying a grouped-data sample-selection estimation technique that is capable of imputing the missing values conditional upon a respondent's decision to answer a...
