[1] Inst Business Management IoBM, Coll Business Management, Karachi, Pakistan
[2] Univ Regina, Fac Engn & Appl Sci, Ind Syst Engn, Regina, SK, Canada
[3] Univ Kent, Kent Business Sch, Kent, England
[4] Univ Tunn Hussein Onn, Fac Business & Technol, Batu Pahat Johar, Malaysia