【作者(必填)】John J. Siegfried and Laurie Beth Evans【文题(必填)】Empirical studies of entry and exit: A survey of the evidence
【年份(必填)】Review of Industrial Organization  Volume 9, Number 2, 121-155, DOI: 10.1007/BF01035654
【全文链接或数据库名称(选填)】http://www.springerlink.com/content/pt82471w46484456/




【作者(必填)】Daniel Shapiro∗
【文题(必填)】The determinants of entry and exit reconsidered
【年份(必填)】Volume 5, Issue 1, March 1987, Pages 15–26
【全文链接或数据库名称(选填)】http://www.sciencedirect.com/science/article/pii/0167718787900038