1. Institute of Chemistry “Coriolan Dragulescu”, Mihai Viteazu Ave. 24, 300223 Timisoara, Romania
2. Faculty of Chemistry, Biology, Geography, West University of Timisoara, 4 Vasile Parvan Ave., 300223 Timisoara, Romania
3. National Institute for Research and Development in Electrochemistry and Condensed Matter, Plautius Andronescu Street 1, 300224 Timisoara, Romania