A Study on the Relationship between Financial Constraints and R&D Investment Efficiency of Hi-tech Enterprises [an error occurred while processing this directive]
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Economic Survey  2012, Vol. 1 Issue (5): 077    DOI:
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A Study on the Relationship between Financial Constraints and R&D Investment Efficiency of Hi-tech Enterprises
GU Qun1, ZHAI Shu-Ping2, YUAN Ze-Ming1
1.Business School,Tianjin University of Finance and Economics,300222 China 2.School of Statistics, Tianjin University of Finance and Economics,300222 China
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