About this article
Published Online: Dec 05, 2015
Page range: 14 - 22
Received: Apr 23, 2015
Accepted: Jun 28, 2015
DOI: https://doi.org/10.1515/pcssr-2015-0025
Keywords
© 2015 Tomasz Michaluk et al., published by De Gruyter Open
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Michaluk, Tomasz
Pezdek, Krzysztof