About this article
Published Online: Nov 15, 2014
Page range: 12 - 19
DOI: https://doi.org/10.2478/pcssr-2014-0018
Keywords
© by Michał Lenartowicz
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Lenartowicz, Michał
JankowskiC, Krzysztof W.