1. Institute of Applied
Physics, Academy of Sciences of Moldova, Chisinau, Moldova
2. Cardinal Stefan Wyszyński University in Warsaw, Faculty of Mathematical and Natural Sciences, 01-938 Warszawa, Poland
3. ISTM-CNR, Institute of Molecular Sciences and Technologies of CNR and INSTM UdR, Milano, Italy
4. Department
of Chemistry, Università degli Studi di Milano, Milano, Italy