1. Department of Mathematics, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand
2. Jiangsu Key Laboratory for NSLSCS, School of Mathematical Sciences, Nanjing Normal University, Nanjing, 210023, China
3. Department of Mathematics, Faculty of Science and Technology, Suratthani Rajabhat University, Surat Thani 84100, Thailand
4. Mathematics Department, Faculty of Science and Technology, Suan Dusit University, Bangkok 10300, Thailand
5. Department of Mathematics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand