1、一篇1999年的博士论文（University of Southern California Los Angeles），论文题目是“A fuzzy logic system for predicting environmental costs from product design”，作者是Chihsien Eric Wu。
2、一篇论文：Social choice, uncertainty about external costs and trade-off between intergenerational environmental impacts: The emblematic case of gas-based energy supply decentralization.，作者:Gullì, Francesco来源:Ecological Economics; May2006, Vol. 57 Issue 2, p282-305, 24p（已下载，谢谢！！）
3、一篇报告：Comparison of environmental impact and external cost assessment methods.(Report)，作者：Peter Mizsey, Luis Delgado and Tamas Benko，来自The International Journal of Life Cycle Assessment 14.7 (Nov 2009): p665(11).
         无法从网上下载，如果您手上有这些论文，谢谢您与我共享！谢谢！！