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How to measure patent thickets—A novel approach
von Graevenitz, Georg; Wagner, Stefan; Harhoff, Dietmar - In: Economics letters 111 (2011) 1, pp. 6-10
Persistent link: https://www.econbiz.de/10008893759
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The heterogeneous effect of software patents on expected returns : evidence from India
Eberhardt, Markus; Fafchamps, Marcel; Helmers, Christian; … - In: Economics letters 145 (2016), pp. 73-78
Persistent link: https://www.econbiz.de/10011618215
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How to measure patent thickets : a novel approach
Graevenitz, Georg von; Wagner, Stefan; Harhoff, Dietmar - In: Economics letters 111 (2011) 1, pp. 6-9
Persistent link: https://www.econbiz.de/10009241385