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Firm specialisation in clean energy technologies: the influence of path dependence and technological diversification, 2018. ,
URL : https://hal.archives-ouvertes.fr/hal-01775178
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Pierluigi Toma and Cinzia Daraio Exploring the Innovative Efficiency of Big Multinational Firms through Conditional Efficiency Analysis STI, September The RISIS Patent Database documentation can be found on, pp.12-14, 2018. ,