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| 2012, Vol. 1(5): 77-81 DOI: | ||
| 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 | ||
| Received 2011-08-06 Revised 2012-09-25 | ||
| Supporting info | ||
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