1. Department of Mathematics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
2. Department of Mathematics, COMSATS University Islamabad, Attock Campus, Attock, Pakistan
3. Department of Mathematics,, University of Sargodha, Sargodha, Pakistan
4. Department of Mathematics Education, Akenten Appiah Menka University of Skills Training and Entrepreneurial Development, Kumasi, Ghana