José Manuel Martins Caetano () (Department of Economics, University of Évora) Aurora Galego () (Department of Economics, University of Évora) Elsa Vaz () (Department of Economics, University of Évora) Isabel Vieira () (Department of Economics, University of Évora) Carlos Vieira () (Department of Economics, University of Évora)
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Paper provided by University of Évora, Department of Economics (Portugal) in its series Economics Working Papers with number
1_2002.