1. University Bourgogne Franche-Comté, FEMTO-ST Institute, CNRS, Montbéliard, France, LaRRIS, Faculty of Sciences, Lebanese University, Lebanon
2. University of Cincinnati - University of Nebraska at Kearney, USA
3. LaRRIS, Faculty of Sciences, Lebanese University, Lebanon
4. University Bourgogne Franche-Comté, FEMTO-ST Institute, CNRS, France