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Citation

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Number of items: 3.

Working paper

Spielkamp, Alfred ; Vopel, Katrin (1998) Mapping Innovative Clusters in National Innovation Systems. Open Access None [Working paper]
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Harhoff, Dietmar ; Scherer, Frederic M. ; Vopel, Katrin (1997) Exploring the Tail of Patented Invention Value Distributions. Open Access None [Working paper]
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Harhoff, Dietmar ; Narin, Francis ; Scherer, Frederic M. ; Vopel, Katrin (1997) Citation Frequency and the Value of Patented Innovation. Open Access None [Working paper]
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