First Author:   Nidhaleddine Ben Cheikh ESC Rennes School of Business & International University of Rabat nbcheikh@gmail.com   Rue Robert d''Arbrissel Rennes, 35065, France   0033617743574(Phone) 0033617743574(Fax) Second Author: Hamidou Mohamed Cheik Central Bank of the Comoros nbcheikh@gmail.com