Differences between Willingness-to-Pay Estimates from Open-Ended and Discrete-Choice Contingent Valuation Methods: The Effects of Heteroscedasticity
研究了开放式和离散选择条件估值法在估计支付意愿时产生差异的原因，发现异方差性是导致差异的关键因素，对资源与环境经济学的价值评估研究有参考意义。
Bente Halvorsen, , Differences between Willingness-to-Pay Estimates from Open-Ended and Discrete-Choice Contingent Valuation Methods: The Effects of Heteroscedasticity, Land Economics, Vol. 74, No. 2 (May, 1998), pp. 262-282