<p>1</p>文献名：Multiple Equilibria and Thresholds Due to Relative Investment Costs <p></p>作者：R.&nbsp;F.&nbsp;Hartl <p></p><p>期刊：Journal of Optimization Theory and Applications，Volume 123, Number 1 / 2004年10月</p><p>电子链接：<a href="http://www.springerlink.com/content/x50188116v741024/">http://www.springerlink.com/content/x50188116v741024/</a></p><p></p><p>2</p>文献名：Sustainable growth, renewable resources and pollution: thresholds and cycles <p></p>作者：Franz Wirl <p></p>期刊：Journal of Economic Dynamics and Control, 2004, vol. 28, issue 6, pages 1149-1157 <p></p><p>电子链接：<a href="http://www.sciencedirect.com/science/article/B6V85-48JCJTF-1/2/df64ac4c4c281ddc0a8640521677ac14">http://www.sciencedirect.com/science/article/B6V85-48JCJTF-1/2/df64ac4c4c281ddc0a8640521677ac14</a></p><p></p><p>3</p>文献名：Pollution thresholds under uncertainty <p></p>作者：Franz Wirl <p></p>期刊：Environment and Development Economics (2006), 11:4:493-506 <p></p><p>电子链接：<a href="http://journals.cambridge.org/action/displayAbstract?fromPage=online&amp;aid=453767">http://journals.cambridge.org/action/displayAbstract?fromPage=online&amp;aid=453767</a></p><p></p><p></p>

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