About this article
Published Online: Apr 18, 2016
Page range: 85 - 90
DOI: https://doi.org/10.1515/sgem-2016-0009
Keywords
© 2016 Kazimierz Rykaluk, published by De Gruyter Open
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Rykaluk, Kazimierz