[1] Audencia Business Sch, 8 Route Joneliere, F-44312 Nantes, France
[2] Cyprus Univ Technol, Dept Commerce Finance & Shipping, CY-3036 Limassol, Cyprus
[3] Univ Durham, Durham Univ Business Sch, Durham DH1 3LB, England
[4] Univ Surrey, Surrey Business Sch, Guildford GU2 7XH, Surrey, England