1. School of Mathematical Sciences, Zhejiang Normal University, Jinhua 321004, China
2. Centre for Advanced Studies in Pure and Applied Mathematics, Bahauddin Zakariya University Multan, Multan 60800, Pakistan
3. Department of Mathematics, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
4. Croatian Academy of Sciences and Arts, 10000 Zagreb, Croatia
5. Faculty of Food Technology and Biotechnology, University of Zagreb, 10000 Zagreb, Croatia