Defence date: 4 December 1992Examining board: Prof. Helge Hveem (Univ. Oslo) ; Prof. Beate Kohler-Koch (Univ. Mannheim) ; Prof. Giandomenico Majone (EUI, supervisor) ; Prof. Ole Karup Pedersen (Univ. Copenhagen) ; Prof. Eugene B. Skolnikoff (MIT) ; Prof. Susan Strange (EUI, co-supervisor)First made available online: 4 July 201