[1] Minist Econ & Finance, Rabat, Morocco
[2] Ibn Tofail Univ, Fac Econ & Management, Kenitra, Morocco
[3] Univ Portsmouth, Fac Business & Law, Sch Accounting Econ & Finance, Portsmouth, England
[4] Consultant Econ & Finance, Riyadh, Saudi Arabia
[5] Mohammed V Univ, Financial Econ, Rabat, Morocco