意愿调查法中的偏好不确定性研究综述
苏红岩, 王华

A review of preference uncertainty in contingent valuation method
SU Hongyan, WANG Hua
图4 考虑不确定性对WTP估计效率的影响(基于NCS/PC数据)
Figure 4 The impact of preference uncertainty on efficiency of willingness-to-pay (WTP) estimates