1. Department of Physics, Faculty of Science, Ibn Tofail University, Kenitra, Morocco
2. Department of Civil Engineering, TKM College of Engineering, Kollam, India
3. Department of Physics, Ecole Normale Superieure, Marrakech, Morocco
4. Centre for Marine Research and Technology, Eduardo Mondlane University, Quelimane, Mozambique
5. Water Development Ltd., Split, Croatia