[1] Department of Mathematics, College of Science, Arak Branch, Islamic Azad University, Arak, Iran
[2] Faculty of Engineering and Information Technology, University of Technology Sydney, Australia
[3] Department of Systems Engineering, Faculty of Economics, VŠB-Technical University of Ostrava, Ostrava, Czech Republic
[4] Department of Operations Management & Business Statistics, College of Economics and Political Science, Sultan Qaboos University, Muscat, Oman