1. School of Mathematics and Statistics Guizhou University of Finance and Economics Guiyang China
2. Guizhou Key Laboratory of Economics System Simulation Guizhou University of Finance and Economics Guiyang China
3. Guizhou Key Laboratory of Big Data Statistical Analysis Guiyang China
4. Department of Mathematics Khawaja Fareed University of Engineering and Information Technology Rahim Yar Khan Pakistan
5. Department of Mathematics University of Malakand Chakdara Khyber Pakhtunkhwa Pakistan
6. Department of Mathematics COMSATS University Islamabad, Abbottabad Campus Abbottabad Khyber Pakhtunkhwa Pakistan