Study realised by Philippe Bertrand (GREQAM, Aix – Marseille 2 University) and Jean-Luc Prigent (THEMA, Cergy-Pontoise University)

Study conducted by Phillipe Bertrand (GREQAM, Aix – Marseille 2 University and Jean-Luc Prigent (THEMA, Cergy – Pontoise University)

Study realised by Eric Jondeau and Michael Rockinger (Lausanne University)

Study realised by Renata Bottazzi (University of Bologna), Tullio Jappelli (University of Naples, CSEF and CEPR) and Mario Padula (University of Venice and CSEF)