1. The University of Jordan,Department of Mathematics,Amman,Jordan
2. The University of Oum El Bouaghi,Department of Mathematics and Computer Science,Oum El Bouaghi,Algeria
3. The University of Oum El Bouaghi,Department Laboratory of Dynamical Systems and Control,Oum El Bouaghi,Algeria
4. Al Zaytoonah University of Jordan,Department of Mathematics,Amman,Jordan