1. Department of Earth and Environmental Sciences; University of Pannonia; Egyetem u. 10 8200 Veszprém Hungary
2. Bio-Nanosystems Laboratory; Research Institute for Biomolecular and Chemical Engineering; University of Pannonia; Egyetem u. 10 8200 Veszprém Hungary
3. Institute of Technical Physics and Materials Science; Centre for Energy Research; Konkoly-Thege u. 29-33 1121 Budapest Hungary