1. Faculty of Materials Science and CeramicsAGH University of Science and Technology Mickiewicza 30 Av., 30‐094 Krakow Poland
2. Faculty of Mining and GeoengineeringAGH University of Science and Technology Mickiewicza 30 Av., 30‐094 Krakow Poland
3. Faculty of Geology, Geophysics and Environmental ProtectionAGH University of Science and Technology Mickiewicza 30 Av., 30‐094 Krakow Poland