Defence date: 15 November 1999Examining board: Prof. Ramon Marimon, EUI (Supervisor) ; Prof. Pierpaolo Battigalli, EUI ; Prof. Manfred Holler, Universität Hamburg ; Prof. Andreu Mas-Colell, Universitat Pompeu Fabra, BarcelonaPDF of thesis uploaded from the Library digitised archive of EUI PhD theses completed between 2013 and 201