1. IEEE: 94086547, Kuala Lumpur, 59200 , Malaysia
2. Department of Mathematics , Cankaya University , 06530 Balgat , Ankara , Turkey , Institute of Space Sciences , R76900 Magurele- Bucharest , Romania , Department of Medical Research , China Medical University , Taichung 40402, Taiwan
3. Mathematical Sciences , Kent State University , Burton, Ohio 44021-9500, U.S.A.