1. Universität Kassel, Institut für Werkstofftechnik; Mönchebergstr. 3 34125 Kassel
2. Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology Szczecin; Institute of Materials Science; Piastów 19 Avenue 70-310 Szczecin Poland
3. Centre of Molecular and Macromolecular Studies; ul. Sienkiewicza 112 90-363 Łódź Poland