1. * Jiangsu Key Laboratory for NSLSCS, School of Mathematical Sciences, Nanjing Normal University , Nanjing , CHINA
2. ** Department of Mathematics, Faculty of Science and Arts, Düzce University , Düzce , TURKEY
3. *** Department of Mathematical Analysis and Numerical Mathematics, Comenius University in Bratislava , Mlynská dolina , , Mathematical Institute, Slovak Academy of Sciences , Štefánikova 49 , Bratislava , SLOVAKIA
4. **** Department of Mathematics, GC Women University , Sialkot , PAKISTAN