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Specialization and diversity as drivers of economic growth: Evidence from High‐Tech industries[J] . Jaakko Simonen,Rauli Svento,Artti Juutinen.Pap Reg Sci . 2015 (2)
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Productive Cities: Sorting, Selection, and Agglomeration[J] . Kristian Behrens,Gilles Duranton,Frédéric Robert-Nicoud.Journal of Political Economy . 2014 (3)