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First citation cite{eaton2002technology}
Second citation cite{fanziyin2010}
Third citation cite{shuangfa}
Fourth citation cite{Banerjee2012On}

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@article{eaton2002technology,
Author = {Eaton, Jonathan and Kortum, Samuel},
Journal = {Econometrica},
Number = {5},
Pages = {1741--1779},
Publisher = {Wiley Online Library},
Title = {Technology, geography, and trade},
Volume = {70},
presort =  2,
Year = {2002}}


@article{fanziyin2010,
Author = {范子英 and 张军},
Date-Added = {2016-11-05 15:26:38 +0000},
Date-Modified = {2016-11-06 06:10:56 +0000},
Journal = {经济研究},
Number = {3},
Pages = {53--64},
Title = {财政分权, 转移支付与国内市场整合},
Volume = {45},
presort =  1,
Year = {2010}}

@book{shuangfa,
Author = {王晓东},
Date-Added = {2016-11-15 03:23:53 +0000},
Date-Modified = {2016-11-15 12:34:28 +0000},
Publisher = {电子工业出版社},
Title = {计算机算法设计与分析},
   presort = 1,
Year = {2001}}

@inproceedings{Banerjee2012On,
Author = {Banerjee, Abhijit},
Date-Added = {2016-11-12 15:09:14 +0000},
Date-Modified = {2016-11-12 15:09:14 +0000},
Pages = {1--53},
Title = {On the Road: Access to Transportation Infrastructure and Economic Growth in China},
   presort =  2,
Year = {2012}}