Edres , Nada, Baku State University, Faculty of Chemistry, Khartum university, Faculty of Education, Department of Chemistry, Khartoum, Sudan Eisen , Moris, Technion – Israel Institute of Technology, Haifa, Israel El-Ghayoury , A., Univ Angers, CNRS, MOLTECH – Anjou, SFR MATRIX, F-49000 Angers, France Epple , M., University of Duisburg-Essen
