1. Guilin University of Technology , Guilin , China
2. Mathematics-Computer Department, Art-Science Faculty, Eskisehir Osmangazi University , Eskisehir , Turkey
3. Department of Computer Engineering, Faculty of Engineering and Architecture, Kastamonu University , Kastamonu , Turkey
4. Jabalia Camp, United Nations Relief and Works Agency (UNRWA) Palestinian Refugee Camp , Gaza Strip Jabalya , Palestine
5. Institute of Mathematical Sciences, Faculty of Science, University of Malaya , Kuala Lumpur 50603 , Malaysia
6. Department of Computer Science and Engineering, European University Cyprus , Nicosia 1516 , Cyprus
7. CIICESI-ESTG, Politecnico do Porto , 4610-156 Felgueiras , Portugal