1. Faculty of Technical Sciences, University of Novi Sad, Trg D. Obradovića 6, 21125 Novi Sad, Serbia
2. Department of Mathematics, National Kaohsiung Normal University, Kaohsiung 82444, Taiwan
3. Department of Engineering Sciences, Izmir Katip Celebi University, Izmir 35620, Turkey
4. Department for Mathematics and Informatics, Faculty of Civil Engineering, Ss. Cyril and Methodius University in Skopje, Partizanski Odredi 24, P.O. Box 560, 1000 Skopje, North Macedonia