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DP8047 R&D Efficiency and Barriers to Entry: A Two Stage Semi-Parametric DEA Approach 智库出版物
2010
作者:  Jens Schmidt-Ehmcke;  Astrid Cullmann;  Petra Zloczysti
收藏  |  浏览/下载:4/0  |  提交时间:2022/09/22
R&d efficiency  Data envelopment analysis  Truncated regulation