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Fromhold-Eisebith, Martina (2007). "Bridging Scales in Innovation Policies: How to Link Regional, National and International Innovation Systems". European Planning Studies. 15 (2): 217–233. doi:10.1080/09654310601078754. ISSN0965-4313. S2CID154902491.
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Fromhold-Eisebith, Martina (2007). "Bridging Scales in Innovation Policies: How to Link Regional, National and International Innovation Systems". European Planning Studies. 15 (2): 217–233. doi:10.1080/09654310601078754. ISSN0965-4313. S2CID154902491.