1. Department of Physics, Urmia Branch, Islamic Azad. University, Urmia 63896, Iran
2. Faculty of Science, Department of Mathematics, University of Zakho, Zakho 42002, Iraq
3. Faculty of Science, Department of Mathematics, Firat University, Elazig 23119, Turkey
4. School of Undergraduate Studies, California Institute of Integral Studies, San Francisco, California 94103, USA