帮忙寻下这篇吧Ham J and R Lalonde.(1996)"The Effect of Sample Selection and Initital Conditions in Duration Models:Evidence from Experimental Data on Training",Econometrica,64:1.我找到了,不过要收费,无奈。如果谁有的话希望能发给我,万分感谢!
我的邮箱是tianjfield@163.com
我的邮箱是tianjfield@163.com


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