International Invention: Implications for Technology Market Analysis
In: R&D, Patents, and Productivity
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- Sláma, Jirí, 1981. "Analysis by means of a gravitation model of international flows of patent applications in the period 1967-1978," World Patent Information, Elsevier, vol. 3(1), pages 2-8, January.
- Mansfield, Edwin & Schwartz, Mark & Wagner, Samuel, 1981. "Imitation Costs and Patents: An Empirical Study," Economic Journal, Royal Economic Society, vol. 91(364), pages 907-18, December.
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