2FRITSCH M,VIKTOR SLAVTCHEV V. What determines the efficiency of regional innovation systems? [R]. Jena Economic Research Papers, 2007.
3M KHODABAKHSHI, Y GHOLAMI, H KHEIROLI.AHh An additive model approach for estimating returns to scale in imprecise data envelopment analysis[J]. Applied Mathe- matical Modelling,2010,34(5) :1 247-1 257.
4BOAZ GOLANY,GANG YU. Estimating returns to scale in DEA[J]. European Journal of Operational Research, 1997, 103(1) :28-37.
5ZABALA-ITURRIAGAGOITIA J M,VOIGT P,GUTIER- REZ GRACIA A, JIMENEZ-SAEZ F. Regional innovation systems:how to assess performance[J]. Regional Studies, 2007,41(5) 661-672.
6WOLFGANG GERSTLBERGER. Regional innovation systems and sustainability-selected examples of international discussion[J]. Technovation, 2004,24 ( 9 ) : 749-758.
7LOET I.EYDESDORFF, HENRY ETZKOWITZ. The dynamics of innovation:from national systems and "Mode 2" to a Triple Helix of university-industry government relations[J]. Research Policy,2000,29(2) :111- 112.
8FURMAN J L,PORTER M E,STERN S. The determinants of national innovative capacity[J].Research Policy, 2002,31 (6)899- 933.
