求助两篇文献，路过的朋友帮帮忙啦。谢谢啦！
1    THE EMPIRICAL CONTENT OF SHIFT-SHARE ANALYSIS。
http://www3.interscience.wiley.com/journal/120059529/abstract?CRETRY=1&SRETRY=0

2    Spatial shift-share analysis versus spatial filtering: an application to Spanish employment data  https://springerlink.metapress.com/content/w488r07876u78627/resource-secured/?target=fulltext.pdf&sid=33shwjzfvmcmdb45ongkvfrh&sh=www.springerlink.com


3    Dynamic Shift-Share Analysis
http://down.cenet.org.cn/view.asp?id=68654