1. Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb 10000, Croatia, Fax: +385‐1‐461‐1191, http://www.chem.pmf.hr
2. Faculty of Textile Technology, Department of Applied Chemistry, University of Zagreb, Prilaz baruna Filipovića 28a, Zagreb 10000, Croatia, Fax: +385‐1‐3712‐599, http://www.unizg.ttf.hr
3. Rudjer Bošković Institute, P. O. Box 1016, Zagreb 10000, Croatia, http://www.irb.hr