能帮忙下载下面几篇文章吗?先谢谢了.
李玉文、 徐中民、王勇、 焦文献.《环境库兹涅茨曲线研究进展》. 中国人口.资源与环境,2005年第5期
Kjetil Telle and Jan Larsson. Do environmental regulations hamper productivity growth? How accounting for improvements of plants' environmental performance can change the conclusion.Ecological Economics ,2007
Kjetil Telle.Firms’ Compliance to Environmental Regulation: Is There Really a Paradox?.Environmental and Resource Economics