1. Faculty of Dental Medicine; “Apollonia” University; 700399 Iasi Romania
2. Research Institute “Academician Ioan Haulica”; 700399 Iasi Romania
3. SHE Department; Du Pont de Nemours; 68701 Cernay Cedex France
4. Faculty of Applied Chemistry and Materials Science; Inorganic Chemistry, Physical Chemistry and Electrochemistry Department, Politehnica University of Bucharest; P.O. 011061 Bucharest Romania
5. Faculty of Chemical Engineering and Protection of the Environment; Department of Natural and Synthetic Polymers, “Gheorghe Asachi” Technical University; 700050 Iasi Romania
6. LPIM, University of Haute Alsace; 68100 Mulhouse Cedex France