[1] King Saud Univ, Coll Business Adm, Dept Management, POB 71115, Riyadh 11362, Saudi Arabia
[2] Xi An Jiao Tong Univ, Sch Econ & Finance, Xian 710049, Peoples R China
[3] Ovidius Univ Constanta, Fac Econ Sci, Dept Econ, Mamaia Blvd 124, Constanta 900527, Romania
[4] Natl Univ Polit Studies & Publ Adm, Fac Publ Adm, Dept Publ Management, Expozitiei Blvd 30A, Bucharest 012104, Romania
[5] Acad Romanian Scientists, Bucharest 050094, Romania
[6] Govt Coll Management Sci, Higher Educ Dept, Peshawar 25000, Pakistan
[7] Birmingham Business Sch, Dept Management, Birmingham B15 2TY, England