1. University of Vienna, Institute of Inorganic Chemistry, Vienna, Austria
2. Moldova State University, Chisinau, Republic of Moldova
3. Inorganic Polymers Department, “Petru Poni” Institute of Macromolecular, Chemistry, Iasi, Romania
4. CNRS-LNCMI, Grenoble Cedex, France
5. Institute of Physical Chemistry and Chemical Physics, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava, Slovak Republic