1. Department of Mathematics, Al Zaytoonah University of Jordan, Amman 11733, Jordan
2. Nonlinear Dynamics Research Center (NDRC), Ajman University, Ajman, UAE
3. Department of Civil Engineering, The University of Texas at Arlington, Box 19308,428 Nedderman Hall, Arlington, TX 76019, USA
4. Department of Mathematics, The University of Jordan, Amman 11942, Jordan