Authors
Łukasz Herezy
Agh University Of Science And Technology, Faculty Of Mining And Geoengineering, Kraków, Poland
Dariusz Janik
Agh University Of Science And Technology, Faculty Of Mining And Geoengineering, Kraków, Poland
Krzysztof Skrzypkowski
Agh University Of Science And Technology, Faculty Of Mining And Geoengineering, Kraków, Poland