Study realised by Christophe Daniel (GRANEM, Angers University), Anne Lavigne (LEO, Orléans University), Stéphane Mottet (GRIEF, Poitiers University), Jésus-Herell Nze Obame (GRANEM, Angers University), Bruno Séjourné (GRANEM, Angers University), Christian Tagne (LEO, Orléans University)

Study realised by Jean-Noel Barrot (MIT Sloan), Ron Kaniel (Simon School of Business at University of Rochester and CEPR), David Sraer (Princeton University and NBER)

Study realised by Mikkel Barslund (CEPS), Ales Chmelar (CEPS), Florence Legros (Paris Dauphine University & CEPS)