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First Author:
 
Fábio A. R. Gomes
University of São Paulo, Department of Economics, FEA-RP
fabiogomes@fearp.usp.br
 
Av. Bandeirantes 3900, Monte Alegre
Ribeirão Preto, 14040-905, Brazil
 
55 (16) 99770-6419(Phone)
55 (16) 99770-6419(Fax)