Citation:
Recherches Economiques de Louvain, 2002, v. 68, pp. 7-19
ISSN:
0770-4518
Sponsor:
Licando and Ruiz-Castillo acknowledge the financial support of the Spanish Ministry of Sciences and Technology (SEC2000-0260 and SE2000-0173, respectively). Jorge Durán acknowledges financial support from a European Maria Curie fellowship (Grant HPMF-CT-1999-00410)