1. Department of Mathematics, Faculty of Science and Arts, Düzce University , Düzce , Turkey
2. Jiangsu Key Laboratory for NSLSCS, School of Mathematical Sciences, Nanjing Normal University , Nanjing , 210023 , China
3. Department of Mathematics, GC Women University , Sialkot , Pakistan
4. Institute for Advanced Study Honoring Chen Jian Gong, Hangzhou Normal University , Hangzhou 311121 , China