About this article
Published Online: May 17, 2018
Page range: 85 - 88
DOI: https://doi.org/10.2478/logos-2018-0007
© 2018 Jacek Motyka et al., published by De Gruyter Open
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Jacek Motyka
AGH University of Science and Technology,
Kraków, Poland
Ondra Sracek
Olomouc