[1] Xiamen Univ, Sch Law, Xiamen 361005, Peoples R China
[2] Univ Tunis El Manar, Fac Econ & Management Tunis, Tunis, Tunisia
[3] Univ Kurdistan Hewler UKH, Sch Management & Econ, 30 Meter Ave, Erbil, Iraq
[4] Swansea Univ, Sch Management, Bay Campus, Swansea SA1 8EN, Wales