Authors
Michał Molenda
Silesian University of Technology, Faculty of Organization and Management Institute of Production Engineering ul. Roosevelta 26-28, 41-800, Zabrze, Poland
© 2018 Michał Molenda, published by STE Group sp. z.o.o.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.