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"Closing borders is naive, the virus will come regardless" - this was the policy assumption that was repeatedly stated until mid-March by the WHO, the EU, as well as responsible authorities in Germany and other countries. Meanwhile, other states had started closing their borders to travellers...
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Using quarterly data of 58 countries, this paper provides empirical evidence that mobile phone diffusion from 2007 to …). In addition, we test if the impact on mobile phone diffusion differs whether technologies are local or global standards … (Global System for Mobile Communications) technology prevent the diffusion of third generation (3G) mobile phones. We show …
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The purpose of this paper is to illuminate the geographical diffusion of photovoltaic installations in Germany …
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