1. "Nonlinear Analysis Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam Faculty of Mathematics and Statistics, Ton Duc Thang University, Ho Chi Minh City, Vietnam; Université de Sousse, Institut Supérieur d’Informatique et des Techniques de Communication, H. Sousse 4000, Tunisia; China Medical University Hospital, China Medical University, Taichung 40402, Taiwan, E-mail: hassen.aydi@tdtu.edu.vn"
2. Balıkesir University, Department of Mathematics, 10145 Balıkesir, Turkey, E-mail: nihaltas@balikesir.edu.tr
3. Balıkesir University, Department of Mathematics, 10145 Balıkesir, Turkey, E-mail: nihal@balikesir.edu.tr