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Invention in the city: Increasing returns to patenting as a scaling function of metropolitan size
Bettencourt, Luis M.A., (2007)
Sectoral Shares, Specialisation and Metropolitan Wages in the United States, 1969-96
Drennan, Matthew, (2002)
A Simple Test for Convergence of Metropolitan Income in the United States
Drennan, Matthew P., (1999)