1. Department of Electrical Engineering, University of Bojnord, P.O. Box 94531-1339, Bojnord, Iran
2. Department of Engineering Science, Kermanshah University of Technology, P.O. Box 6715685420, Kermanshah, Iran
3. Department of Mathematics, Faculty of Engineering and Natural Sciences, Bahçeşehir University, P.O. Box 34349 Istanbul, Turkey
4. Department of Mathematics, Faculty of Arts and Sciences, Cankaya University, 06530 Ankara, Turkey
5. Institute of Space Sciences, P.O. Box MG-23, R 76900 Magurele–Bucharest, Romania