Authors
Tadeusz Majcherczyk
AGH University of Science and Technology, Faculty of Mining and Geoengineering,, Kraków, Poland
Zbigniew Niedbalski
AGH University of Science and Technology, Faculty of Mining and Geoengineering,, Krakow, Poland
© 2017 Tadeusz Majcherczyk, Zbigniew Niedbalski, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.