1. Assistant Professor e-mail:
2. Professor e-mail: Faculty of Computer and Materials Science, University of Silesia, Sosnowiec 41–200, Poland
3. Assistant Professor Institute of Materials Science, University of Silesia, Chorzow 41–500, Poland e-mail:
4. Assistant Professor Faculty of Computer and Materials Science, University of Silesia, Sosnowiec 41–200, Poland e-mail: