Combes, Pierre-Philippe; Duranton, Gilles; Gobillon, Laurent - C.E.P.R. Discussion Papers - 2008
Does productivity increase with density? We revisit the issue using French wage and TFP data. To deal with the ‘endogenous quantity of labour’ bias (i.e., urban agglomeration is consequence of high local productivity rather than a cause), we take an instrumental variable approach and...