About this article
Published Online: Dec 30, 2015
Page range: 121 - 126
Received: Sep 01, 2015
Accepted: Nov 01, 2015
DOI: https://doi.org/10.2478/johr-2015-0023
Keywords
© 2015 Anna Wrzodak et al., published by De Gruyter Open
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Wrzodak, Anna
Gajewski, Marek